SelectImpl (OpenJPA Parent POM 2.0.0 API)

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org.apache.openjpa.jdbc.sql
Class SelectImpl

java.lang.Object
  org.apache.openjpa.jdbc.sql.SelectImpl

All Implemented Interfaces:: Select, SelectExecutor

public class SelectImpl
extends Object
implements Select
extends Object
implements Select

Standard Select implementation. Usage note: though this class implements Joins, it should not be used for joining directly. Instead, use the return value of newJoins().

Author:: Abe White

Nested Class Summary
`static class`	`SelectImpl.SelectResult` A `Result` implementation wrapped around this select.
`protected static class`	`SelectImpl.Selects` Helper class to track selected columns, with fast contains method.

Field Summary
`protected SelectImpl`	`_outer`
`protected SelectImpl.Selects`	`_selects`

Fields inherited from interface org.apache.openjpa.jdbc.sql.Select
`EAGER_INNER, EAGER_OUTER, EAGER_PARALLEL, FROM_SELECT_ALIAS, SUBS_ANY_JOINABLE, SUBS_EXACT, SUBS_JOINABLE, SUBS_NONE, TYPE_JOINLESS, TYPE_TWO_PART`

Constructor Summary
`SelectImpl(JDBCConfiguration conf)` Constructor.

Method Summary
`void`	`addJoinClassConditions()` Apply class conditions from relation joins.
`Joins`	`and(Joins joins1, Joins joins2)` AND the given joins together.
`void`	`append(SQLBuffer buf, Joins joins)` Append the given joins to the given buffer.
`void`	`clearOrdering()` Clear odering conditions.
`void`	`clearPlaceholderSelects()` Clear selected placeholders, and return removed select indexes.
`void`	`clearSelects()` Clear the existing column selects.
`SelectImpl`	`clone(Context ctx)`
`Joins`	`crossJoin(Table localTable, Table foreignTable)` Perform a cross join on the given tables.
`Context`	`ctx()` Return the JPQL query context of this select
`SelectExecutor`	`eagerClone(FieldMapping key, int eagerType, boolean toMany, int sels)` Return a select that will be eagerly executed with this one, or null if the select cannot be created for the given key and join type.
`Result`	`execute(JDBCStore store, JDBCFetchConfiguration fetch)` Execute this select in the context of the given store manager.
`Result`	`execute(JDBCStore store, JDBCFetchConfiguration fetch, int lockLevel)` Execute this select in the context of the given store manager.
`protected Result`	`execute(StoreContext ctx, JDBCStore store, JDBCFetchConfiguration fetch, int lockLevel)` Execute this select in the context of the given store manager.
`protected ResultSet`	`executeQuery(Connection conn, PreparedStatement stmnt, SQLBuffer sql, boolean isLRS, JDBCStore store)` This method is to provide override for non-JDBC or JDBC-like implementation of executing query.
`ResultSet`	`executeQuery(Connection conn, PreparedStatement stmnt, String sql, JDBCStore store, Object[] params, Column[] cols)` This method is to provide override for non-JDBC or JDBC-like implementation of executing query.
`SelectExecutor`	`fullClone(int sels)` Return a SELECT that is a complete clone of this one.
`Map`	`getAliases()`
`boolean`	`getAutoDistinct()` Whether to automatically make results distinct when relational joins would otherwise introduce duplicates.
`String`	`getColumnAlias(Column col)` Return the alias for the given column.
`String`	`getColumnAlias(Column col, Joins joins)` Return the alias for the given column.
`String`	`getColumnAlias(Column col, Object path)` Return the alias for the give column
`String`	`getColumnAlias(String col, Table table)` Return the alias for the given column.
`String`	`getColumnAlias(String col, Table table, Joins joins)` Return the alias for the given column.
`JDBCConfiguration`	`getConfiguration()` Return the select configuration.
`String`	`getCorrelatedVariable()` Return correlated variable name
`int`	`getCount(JDBCStore store)` Return the number of instances matching this select.
`protected int`	`getCount(ResultSet rs)` This method is to provide override for non-JDBC or JDBC-like implementation of getting count from the result set.
`SelectExecutor`	`getEager(FieldMapping key)` Return the eager select for the given key.
`Map`	`getEagerMap()` Return view of eager selects.
`Result`	`getEagerResult(Connection conn, PreparedStatement stmnt, ResultSet rs, JDBCStore store, JDBCFetchConfiguration fetch, boolean forUpdate, SQLBuffer sql)` This method is to provide override for non-JDBC or JDBC-like implementation of executing eager selects.
`long`	`getEndIndex()` The result end index.
`int`	`getExpectedResultCount()` The expected result count for the query.
`Select`	`getFromSelect()` Another select instance that creates a temporary table from which this select pulls data.
`SQLBuffer`	`getGrouping()` Return the grouping SQL for this select.
`boolean`	`getHasSubselect()` Return the flag to indicate whether this Select has internally generated subselect
`SQLBuffer`	`getHaving()` Return the HAVING clause, or null if none.
`List`	`getIdentifierAliases()` Get the aliases for identifier columns that can be used in COUNT selects to find the number of matches.
`Iterator`	`getJoinIterator()` Return the top-level `Join` elements for this select.
`Joins`	`getJoins()` Return the top-level joins for this select.
`int`	`getJoinSyntax()` The join syntax for this select, as one of the syntax constants from `JoinSyntaxes`.
`SQLBuffer`	`getOrdering()` Return the ordering SQL for this select.
`Select`	`getParent()` Return the parent of this select, if it is a subselect.
`Select`	`getSelect()` The select owner of this join
`List`	`getSelectAliases()` Return the aliases of all selected columns and all selected buffers, in the order they were selected.
`List`	`getSelects()` Return the actual `Val`s and `Column`s that were selected, in the order that they were selected.
`SQLBuffer`	`getSQL()` Get the buffer if it has been computed by a previous call to `SelectExecutor.toSelect(boolean, JDBCFetchConfiguration)`, if any.
`long`	`getStartIndex()` The result start index.
`String`	`getSubselectPath()` Return the subselect path for this select, if it is a subselect.
`List`	`getSubselects()` Return this select's subselects, or empty collection if none.
`Collection`	`getTableAliases()` Return the set of all used table aliases.
`Map`	`getTables()`
`SQLBuffer`	`getWhere()` Return the WHERE clause, minus any necessary end joins.
`void`	`groupBy(ClassMapping mapping, int subclasses, JDBCStore store, JDBCFetchConfiguration fetch)` Group by the columns of the given mapping, possibly including subclasses.
`void`	`groupBy(ClassMapping mapping, int subclasses, JDBCStore store, JDBCFetchConfiguration fetch, Joins joins)` Group by the columns of the given mapping, possibly including subclasses.
`void`	`groupBy(Column col)` Group by the given column.
`void`	`groupBy(Column[] cols)` Group by the given columns.
`void`	`groupBy(Column[] cols, Joins joins)` Group by the given columns.
`void`	`groupBy(Column col, Joins joins)` Group by the given column.
`void`	`groupBy(SQLBuffer sql)` Add a GROUP BY clause.
`void`	`groupBy(SQLBuffer sql, Joins joins)` Add a GROUP BY clause.
`void`	`groupBy(String sql)` Add a GROUP BY clause.
`void`	`groupBy(String sql, Joins joins)` Add a GROUP BY clause.
`boolean`	`hasEagerJoin(boolean toMany)` Whether this select has an eager join of the specified type.
`boolean`	`hasJoin(boolean toMany)` Whether this select has a join of the specified type.
`boolean`	`hasMultipleSelects()` Affirm if this receiver requires more than one selects to fetch its data.
`void`	`having(SQLBuffer sql)` Add the given having conditions.
`void`	`having(SQLBuffer sql, Joins joins)` Add the given having conditions.
`void`	`having(String sql)` Add the given having conditions.
`void`	`having(String sql, Joins joins)` Add the given having conditions.
`int`	`indexOf()` The index of this select within the UNION, or 0.
`void`	`insertPlaceholder(String sql, int pos)` Insert a placeholder at the given index; use a negative index to count from the back of the select list.
`boolean`	`isAggregate()` Return true if this is an aggregate select.
`boolean`	`isDirty()` Return true if this instance has a path, any joins, or a variable.
`boolean`	`isDistinct()` Whether this is a SELECT DISTINCT / UNION ALL.
`boolean`	`isEmpty()` Whether we have any joins.
`boolean`	`isLob()` Return true if this select includes a LOB.
`boolean`	`isLRS()` Whether the result of this select should be treated as a large result set.
`boolean`	`isOuter()` Whether this joins path results in outer joins.
`boolean`	`isSelected(Table table)` Return whether the given table is being used in this select.
`Joins`	`join(ForeignKey fk, boolean inverse, boolean toMany)` Join the columns of the given foreign key.
`int`	`joinCount()` Return the maximum number of joins contained in this instance at any time.
`Joins`	`joinRelation(String name, ForeignKey fk, ClassMapping target, int subs, boolean inverse, boolean toMany)` Join the columns of the given foreign key, which represents a relation via the given field name.
`org.apache.openjpa.jdbc.sql.JoinSet`	`joins()` Return the set of `Join` elements, or null if none.
`void`	`logEagerRelations()` Extended trace that logs eager relations
`void`	`moveJoinsToParent()` Move joins that belong to subquery's parent
`Joins`	`newJoins()` Return a new instance to use for joining.
`Joins`	`newOuterJoins()` Return a new instance to use for outer joining.
`protected SelectImpl.Selects`	`newSelects()`
`void`	`nullJoins()` Null the set of `Join` elements.
`Joins`	`or(Joins joins1, Joins joins2)` OR the given joins together.
`int`	`orderBy(Column[] cols, boolean asc, boolean sel)` Order by the given columns.
`int`	`orderBy(Column[] cols, boolean asc, Joins joins, boolean sel)` Order by the given columns.
`boolean`	`orderBy(Column col, boolean asc, boolean sel)` Order by the given column.
`boolean`	`orderBy(Column col, boolean asc, Joins joins, boolean sel)` Order by the given column.
`boolean`	`orderBy(SQLBuffer sql, boolean asc, boolean sel, Value selAs)` Add an ORDER BY clause.
`boolean`	`orderBy(SQLBuffer sql, boolean asc, Joins joins, boolean sel, Value selAs)` Add an ORDER BY clause.
`boolean`	`orderBy(String sql, boolean asc, boolean sel)` Add an ORDER BY clause.
`boolean`	`orderBy(String sql, boolean asc, Joins joins, boolean sel)` Add an ORDER BY clause.
`int`	`orderByPrimaryKey(ClassMapping mapping, boolean asc, boolean sel)` Order on the primary key columns of the given mapping, joining to superclasses as necessary to get all columns needed to construct an object id.
`int`	`orderByPrimaryKey(ClassMapping mapping, boolean asc, Joins joins, boolean sel)` Select and order on the primary key columns of the given mapping, joining to superclasses as necessary to get all columns needed to construct an object id.
`int`	`orderByPrimaryKey(ClassMapping mapping, boolean asc, Joins joins, boolean sel, boolean aliasOrder)` Allow unions to set aliases on order columns.
`Joins`	`outer(Joins joins)` Return a join set making the given joins outer joins.
`Joins`	`outerJoin(ForeignKey fk, boolean inverse, boolean toMany)` Join the columns of the given foreign key.
`Joins`	`outerJoinRelation(String name, ForeignKey fk, ClassMapping target, int subs, boolean inverse, boolean toMany)` Join the columns of the given foreign key, which represents a relation via the given field name.
`StringBuilder`	`path()` Return the relation path traversed by these joins, or null if none.
`protected PreparedStatement`	`prepareStatement(Connection conn, SQLBuffer sql, JDBCFetchConfiguration fetch, int rsType, int rsConcur, boolean isLRS)` This method is to provide override for non-JDBC or JDBC-like implementation of preparing statement.
`PreparedStatement`	`prepareStatement(Connection conn, String sql)` This method is to provide override for non-JDBC or JDBC-like implementation of preparing statement.
`void`	`removeAlias(Object key)`
`void`	`removeTable(Object key)`
`void`	`select(ClassMapping mapping, int subclasses, JDBCStore store, JDBCFetchConfiguration fetch, int eager)` Select the columns of the given mapping, possibly including subclasses.
`void`	`select(ClassMapping mapping, int subclasses, JDBCStore store, JDBCFetchConfiguration fetch, int eager, Joins joins)` Select the columns of the given mapping, possibly including subclasses.
`boolean`	`select(Column col)` Select the given column.
`int`	`select(Column[] cols)` Select the given columns.
`int`	`select(Column[] cols, Joins joins)` Select the given columns.
`boolean`	`select(Column col, Joins joins)` Select the given column.
`boolean`	`select(SQLBuffer sql, Object id)` Select the given SQL; the given id object is an identifier to use when retrieving the corresponding value from a `Result`.
`boolean`	`select(SQLBuffer sql, Object id, Joins joins)` Select the given SQL; the given id object is an identifier to use when retrieving the corresponding value from a `Result`.
`boolean`	`select(String sql, Object id)` Select the given SQL; the given id object is an identifier to use when retrieving the corresponding value from a `Result`.
`boolean`	`select(String sql, Object id, Joins joins)` Select the given SQL; the given id object is an identifier to use when retrieving the corresponding value from a `Result`.
`void`	`selectIdentifier(ClassMapping mapping, int subclasses, JDBCStore store, JDBCFetchConfiguration fetch, int eager)` Select the columns of the given mapping, possibly including subclasses.
`void`	`selectIdentifier(ClassMapping mapping, int subclasses, JDBCStore store, JDBCFetchConfiguration fetch, int eager, Joins joins)` Select the columns of the given mapping, possibly including subclasses.
`boolean`	`selectIdentifier(Column col)` Select the given column as one that can be used to get a count of distinct matches.
`int`	`selectIdentifier(Column[] cols)` Select the given columns as ones that can be used to get a count of distinct matches.
`int`	`selectIdentifier(Column[] cols, Joins joins)` Select the given columns as ones that can be used to get a count of distinct matches.
`boolean`	`selectIdentifier(Column col, Joins joins)` Select the given column as one that can be used to get a count of distinct matches.
`void`	`selectPlaceholder(String sql)` Select the given SQL as a placeholder for a UNION element.
`int`	`selectPrimaryKey(ClassMapping mapping)` Select the primary key columns of the given mapping, joining to superclasses as necessary to get all columns needed to construct an object id.
`int`	`selectPrimaryKey(ClassMapping mapping, Joins joins)` Select the primary key columns of the given mapping, joining to superclasses as necessary to get all columns needed to construct an object id.
`void`	`setAggregate(boolean agg)` Set to true for aggregate selects.
`void`	`setAutoDistinct(boolean val)` Whether to automatically make results distinct when relational joins would otherwise introduce duplicates.
`void`	`setContext(Context context)` Set JPQL query context for this select
`Joins`	`setCorrelatedVariable(String var)` Set the correlated variable name being traversed into with the next join.
`void`	`setDistinct(boolean distinct)` Whether this is a SELECT DISTINCT / UNION ALL.
`void`	`setExpectedResultCount(int expectedResultCount, boolean force)` The expected result count for the query.
`void`	`setFromSelect(Select sel)` Another select instance that creates a temporary table from which this select pulls data.
`void`	`setHasSubselect(boolean hasSub)` Set the flag to indicate whether this Select has internally generated subselect
`Joins`	`setJoinContext(Context ctx)` Set subquery context when traversing into the next join is in transition from parent context to subquery.
`void`	`setJoinSyntax(int joinSyntax)` The join syntax for this select, as one of the syntax constants from `JoinSyntaxes`.
`void`	`setLob(boolean lob)` Set to true for selects that include LOB columns.
`void`	`setLRS(boolean lrs)` Whether the result of this select should be treated as a large result set.
`org.apache.openjpa.jdbc.sql.PathJoins`	`setOuter(boolean outer)` Mark this as an outer joins set.
`void`	`setParent(Select parent, String path)` Turn this select into a subselect of the given instance.
`void`	`setRange(long start, long end)` Set the result range for this select.
`void`	`setSchemaAlias(String schemaAlias)` Record the initial schemaAlias of a join path
`Joins`	`setSubselect(String alias)` Set the subquery alias.
`Joins`	`setVariable(String var)` Set the variable name being traversed into with the next join.
`boolean`	`supportsLocking()` Whether this select can be executed for update.
`boolean`	`supportsRandomAccess(boolean forUpdate)` Return whether this select can support a random access result set type.
`static String`	`toOrderAlias(int index)` Helper method to return the proper order alias for the given order column index.
`SQLBuffer`	`toSelect(boolean forUpdate, JDBCFetchConfiguration fetch)` Return this select as a SQL statement formatted for the current dictionary.
`SQLBuffer`	`toSelectCount()` Return this select as a COUNT SQL statement formatted for the current dictionary.
`String`	`toString()` Implement toString to generate SQL string for profiling/debuggging.
`void`	`where(Joins joins)` Add the given where conditions.
`void`	`where(SQLBuffer sql)` Add the given where conditions.
`void`	`where(SQLBuffer sql, Joins joins)` Add the given where conditions.
`void`	`where(String sql)` Add the given where conditions.
`void`	`where(String sql, Joins joins)` Add the given where conditions.
`SelectExecutor`	`whereClone(int sels)` Return a SELECT with the same joins and where conditions as this one.
`void`	`whereForeignKey(ForeignKey fk, Object oid, ClassMapping mapping, JDBCStore store)` Add where conditions setting the given foreign key to the given oid values.
`void`	`wherePrimaryKey(Object oid, ClassMapping mapping, JDBCStore store)` Add where conditions setting the mapping's primary key to the given oid values.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Field Detail

_selects

protected final SelectImpl.Selects _selects

_outer

protected SelectImpl _outer

Constructor Detail

SelectImpl

public SelectImpl(JDBCConfiguration conf)

Constructor. Supply configuration.

Method Detail

toOrderAlias

public static String toOrderAlias(int index)

Helper method to return the proper order alias for the given order column index.

setContext

public void setContext(Context context)

Description copied from interface: Select

Set JPQL query context for this select

Specified by:: setContext in interface Select

ctx

public Context ctx()

Description copied from interface: Select

Return the JPQL query context of this select

Specified by:: ctx in interface Select

setSchemaAlias

public void setSchemaAlias(String schemaAlias)

Description copied from interface: Select

Record the initial schemaAlias of a join path

Specified by:: setSchemaAlias in interface Select

getConfiguration

public JDBCConfiguration getConfiguration()

Description copied from interface: SelectExecutor

Return the select configuration.

Specified by:: getConfiguration in interface SelectExecutor

toSelect

public SQLBuffer toSelect(boolean forUpdate,
                          JDBCFetchConfiguration fetch)

Description copied from interface: SelectExecutor

Return this select as a SQL statement formatted for the current dictionary.

Specified by:: toSelect in interface SelectExecutor

getSQL

public SQLBuffer getSQL()

Description copied from interface: SelectExecutor

Get the buffer if it has been computed by a previous call to SelectExecutor.toSelect(boolean, JDBCFetchConfiguration), if any.

Specified by:: getSQL in interface SelectExecutor

toSelectCount

public SQLBuffer toSelectCount()

Description copied from interface: SelectExecutor

Return this select as a COUNT SQL statement formatted for the current dictionary.

Specified by:: toSelectCount in interface SelectExecutor

getAutoDistinct

public boolean getAutoDistinct()

Description copied from interface: SelectExecutor

Whether to automatically make results distinct when relational joins would otherwise introduce duplicates.

Specified by:: getAutoDistinct in interface SelectExecutor

setAutoDistinct

public void setAutoDistinct(boolean val)

Description copied from interface: SelectExecutor

Whether to automatically make results distinct when relational joins would otherwise introduce duplicates.

Specified by:: setAutoDistinct in interface SelectExecutor

isDistinct

public boolean isDistinct()

Description copied from interface: SelectExecutor

Whether this is a SELECT DISTINCT / UNION ALL.

Specified by:: isDistinct in interface SelectExecutor

setDistinct

public void setDistinct(boolean distinct)

Description copied from interface: SelectExecutor

Whether this is a SELECT DISTINCT / UNION ALL.

Specified by:: setDistinct in interface SelectExecutor

isLRS

public boolean isLRS()

Description copied from interface: SelectExecutor

Whether the result of this select should be treated as a large result set.

Specified by:: isLRS in interface SelectExecutor

setLRS

public void setLRS(boolean lrs)

Description copied from interface: SelectExecutor

Whether the result of this select should be treated as a large result set.

Specified by:: setLRS in interface SelectExecutor

getExpectedResultCount

public int getExpectedResultCount()

Description copied from interface: SelectExecutor

The expected result count for the query.

Specified by:: getExpectedResultCount in interface SelectExecutor

setExpectedResultCount

public void setExpectedResultCount(int expectedResultCount,
                                   boolean force)

Description copied from interface: SelectExecutor

The expected result count for the query.

Specified by:: setExpectedResultCount in interface SelectExecutor

force - if false, the count will be discarded if this select has any to-many eager joins that would throw off the result count

getJoinSyntax

public int getJoinSyntax()

Description copied from interface: SelectExecutor

The join syntax for this select, as one of the syntax constants from JoinSyntaxes.

Specified by:: getJoinSyntax in interface SelectExecutor

setJoinSyntax

public void setJoinSyntax(int joinSyntax)

Description copied from interface: SelectExecutor

The join syntax for this select, as one of the syntax constants from JoinSyntaxes.

Specified by:: setJoinSyntax in interface SelectExecutor

supportsRandomAccess

public boolean supportsRandomAccess(boolean forUpdate)

Description copied from interface: SelectExecutor

Return whether this select can support a random access result set type.

Specified by:: supportsRandomAccess in interface SelectExecutor

supportsLocking

public boolean supportsLocking()

Description copied from interface: SelectExecutor

Whether this select can be executed for update.

Specified by:: supportsLocking in interface SelectExecutor

hasMultipleSelects

public boolean hasMultipleSelects()

Description copied from interface: SelectExecutor

Affirm if this receiver requires more than one selects to fetch its data.

Specified by:: hasMultipleSelects in interface SelectExecutor

getCount

public int getCount(JDBCStore store)
             throws SQLException

Description copied from interface: SelectExecutor

Return the number of instances matching this select.

Specified by:: getCount in interface SelectExecutor

Throws:: SQLException

execute

public Result execute(JDBCStore store,
                      JDBCFetchConfiguration fetch)
               throws SQLException

Description copied from interface: SelectExecutor

Execute this select in the context of the given store manager.

Specified by:: execute in interface SelectExecutor

Throws:: SQLException

execute

public Result execute(JDBCStore store,
                      JDBCFetchConfiguration fetch,
                      int lockLevel)
               throws SQLException

Description copied from interface: SelectExecutor

Execute this select in the context of the given store manager.

Specified by:: execute in interface SelectExecutor

Throws:: SQLException

execute

protected Result execute(StoreContext ctx,
                         JDBCStore store,
                         JDBCFetchConfiguration fetch,
                         int lockLevel)
                  throws SQLException

Execute this select in the context of the given store manager. The context is passed in separately for profiling purposes.

Throws:: SQLException

prepareStatement

protected PreparedStatement prepareStatement(Connection conn,
                                             SQLBuffer sql,
                                             JDBCFetchConfiguration fetch,
                                             int rsType,
                                             int rsConcur,
                                             boolean isLRS)
                                      throws SQLException

This method is to provide override for non-JDBC or JDBC-like implementation of preparing statement.

Throws:: SQLException

prepareStatement

public PreparedStatement prepareStatement(Connection conn,
                                          String sql)
                                   throws SQLException

This method is to provide override for non-JDBC or JDBC-like implementation of preparing statement.

Throws:: SQLException

executeQuery

protected ResultSet executeQuery(Connection conn,
                                 PreparedStatement stmnt,
                                 SQLBuffer sql,
                                 boolean isLRS,
                                 JDBCStore store)
                          throws SQLException

This method is to provide override for non-JDBC or JDBC-like implementation of executing query.

Throws:: SQLException

executeQuery

public ResultSet executeQuery(Connection conn,
                              PreparedStatement stmnt,
                              String sql,
                              JDBCStore store,
                              Object[] params,
                              Column[] cols)
                       throws SQLException

This method is to provide override for non-JDBC or JDBC-like implementation of executing query.

Throws:: SQLException

getCount

protected int getCount(ResultSet rs)
                throws SQLException

This method is to provide override for non-JDBC or JDBC-like implementation of getting count from the result set.

Throws:: SQLException

getEagerResult

public Result getEagerResult(Connection conn,
                             PreparedStatement stmnt,
                             ResultSet rs,
                             JDBCStore store,
                             JDBCFetchConfiguration fetch,
                             boolean forUpdate,
                             SQLBuffer sql)
                      throws SQLException

This method is to provide override for non-JDBC or JDBC-like implementation of executing eager selects.

Throws:: SQLException

indexOf

public int indexOf()

Description copied from interface: Select

The index of this select within the UNION, or 0.

Specified by:: indexOf in interface Select

getSubselects

public List getSubselects()

Description copied from interface: Select

Return this select's subselects, or empty collection if none.

Specified by:: getSubselects in interface Select

getParent

public Select getParent()

Description copied from interface: Select

Return the parent of this select, if it is a subselect.

Specified by:: getParent in interface Select

getSubselectPath

public String getSubselectPath()

Description copied from interface: Select

Return the subselect path for this select, if it is a subselect.

Specified by:: getSubselectPath in interface Select

setParent

public void setParent(Select parent,
                      String path)

Description copied from interface: Select

Turn this select into a subselect of the given instance.

Specified by:: setParent in interface Select

setHasSubselect

public void setHasSubselect(boolean hasSub)

Description copied from interface: Select

Set the flag to indicate whether this Select has internally generated subselect

Specified by:: setHasSubselect in interface Select

getHasSubselect

public boolean getHasSubselect()

Description copied from interface: Select

Return the flag to indicate whether this Select has internally generated subselect

Specified by:: getHasSubselect in interface Select

Returns:

getAliases

public Map getAliases()

removeAlias

public void removeAlias(Object key)

getTables

public Map getTables()

removeTable

public void removeTable(Object key)

getFromSelect

public Select getFromSelect()

Description copied from interface: Select

Another select instance that creates a temporary table from which this select pulls data.

Specified by:: getFromSelect in interface Select

setFromSelect

public void setFromSelect(Select sel)

Description copied from interface: Select

Another select instance that creates a temporary table from which this select pulls data.

Specified by:: setFromSelect in interface Select

hasEagerJoin

public boolean hasEagerJoin(boolean toMany)

Description copied from interface: Select

Whether this select has an eager join of the specified type.

Specified by:: hasEagerJoin in interface Select

hasJoin

public boolean hasJoin(boolean toMany)

Description copied from interface: Select

Whether this select has a join of the specified type.

Specified by:: hasJoin in interface Select

isSelected

public boolean isSelected(Table table)

Description copied from interface: Select

Return whether the given table is being used in this select.

Specified by:: isSelected in interface Select

getTableAliases

public Collection getTableAliases()

Description copied from interface: Select

Return the set of all used table aliases.

Specified by:: getTableAliases in interface Select

getSelects

public List getSelects()

Description copied from interface: Select

Return the actual Vals and Columns that were selected, in the order that they were selected.

Specified by:: getSelects in interface Select

getSelectAliases

public List getSelectAliases()

Description copied from interface: Select

Return the aliases of all selected columns and all selected buffers, in the order they were selected. Each alias may be either a string or a SQLBuffer.

Specified by:: getSelectAliases in interface Select

getIdentifierAliases

public List getIdentifierAliases()

Description copied from interface: Select

Get the aliases for identifier columns that can be used in COUNT selects to find the number of matches. Each alias will be a string. If no identifier columns have been nominated, then all column alises are returned.

Specified by:: getIdentifierAliases in interface Select

getOrdering

public SQLBuffer getOrdering()

Description copied from interface: Select

Return the ordering SQL for this select.

Specified by:: getOrdering in interface Select

getGrouping

public SQLBuffer getGrouping()

Description copied from interface: Select

Return the grouping SQL for this select.

Specified by:: getGrouping in interface Select

getWhere

public SQLBuffer getWhere()

Description copied from interface: Select

Return the WHERE clause, minus any necessary end joins.

Specified by:: getWhere in interface Select

getHaving

public SQLBuffer getHaving()

Description copied from interface: Select

Return the HAVING clause, or null if none.

Specified by:: getHaving in interface Select

addJoinClassConditions

public void addJoinClassConditions()

Description copied from interface: Select

Apply class conditions from relation joins. This may affect the return values of Select.getJoins(), Select.getJoinIterator(), and Select.getWhere().

Specified by:: addJoinClassConditions in interface Select

getJoins

public Joins getJoins()

Description copied from interface: Select

Return the top-level joins for this select.

Specified by:: getJoins in interface Select

getJoinIterator

public Iterator getJoinIterator()

Description copied from interface: Select

Return the top-level Join elements for this select.

Specified by:: getJoinIterator in interface Select

getStartIndex

public long getStartIndex()

Description copied from interface: Select

The result start index.

Specified by:: getStartIndex in interface Select

getEndIndex

public long getEndIndex()

Description copied from interface: Select

The result end index.

Specified by:: getEndIndex in interface Select

setRange

public void setRange(long start,
                     long end)

Description copied from interface: Select

Set the result range for this select.

Specified by:: setRange in interface Select

getColumnAlias

public String getColumnAlias(Column col)

Description copied from interface: Select

Return the alias for the given column.

Specified by:: getColumnAlias in interface Select

getColumnAlias

public String getColumnAlias(Column col,
                             Joins joins)

Description copied from interface: Select

Return the alias for the given column.

Specified by:: getColumnAlias in interface Select

getColumnAlias

public String getColumnAlias(String col,
                             Table table)

Description copied from interface: Select

Return the alias for the given column.

Specified by:: getColumnAlias in interface Select

getColumnAlias

public String getColumnAlias(String col,
                             Table table,
                             Joins joins)

Description copied from interface: Select

Return the alias for the given column.

Specified by:: getColumnAlias in interface Select

getColumnAlias

public String getColumnAlias(Column col,
                             Object path)

Return the alias for the give column

Specified by:: getColumnAlias in interface Select

isAggregate

public boolean isAggregate()

Description copied from interface: Select

Return true if this is an aggregate select.

Specified by:: isAggregate in interface Select

setAggregate

public void setAggregate(boolean agg)

Description copied from interface: Select

Set to true for aggregate selects.

Specified by:: setAggregate in interface Select

isLob

public boolean isLob()

Description copied from interface: Select

Return true if this select includes a LOB.

Specified by:: isLob in interface Select

setLob

public void setLob(boolean lob)

Description copied from interface: Select

Set to true for selects that include LOB columns.

Specified by:: setLob in interface Select

clearSelects

public void clearSelects()

Description copied from interface: Select

Clear the existing column selects.

Specified by:: clearSelects in interface Select

select

public boolean select(SQLBuffer sql,
                      Object id)

Description copied from interface: Select

Select the given SQL; the given id object is an identifier to use when retrieving the corresponding value from a Result.

Specified by:: select in interface Select

Returns:: true if selected

select

public boolean select(SQLBuffer sql,
                      Object id,
                      Joins joins)

Description copied from interface: Select

Select the given SQL; the given id object is an identifier to use when retrieving the corresponding value from a Result.

Specified by:: select in interface Select

Returns:: true if selected

select

public boolean select(String sql,
                      Object id)

Description copied from interface: Select

Select the given SQL; the given id object is an identifier to use when retrieving the corresponding value from a Result.

Specified by:: select in interface Select

Returns:: true if selected

select

public boolean select(String sql,
                      Object id,
                      Joins joins)

Description copied from interface: Select

Select the given SQL; the given id object is an identifier to use when retrieving the corresponding value from a Result.

Specified by:: select in interface Select

Returns:: true if selected

selectPlaceholder

public void selectPlaceholder(String sql)

Description copied from interface: Select

Select the given SQL as a placeholder for a UNION element.

Specified by:: selectPlaceholder in interface Select

insertPlaceholder

public void insertPlaceholder(String sql,
                              int pos)

Insert a placeholder at the given index; use a negative index to count from the back of the select list.

clearPlaceholderSelects

public void clearPlaceholderSelects()

Clear selected placeholders, and return removed select indexes.

select

public boolean select(Column col)

Description copied from interface: Select

Select the given column.

Specified by:: select in interface Select

Returns:: true if selected

select

public boolean select(Column col,
                      Joins joins)

Description copied from interface: Select

Select the given column.

Specified by:: select in interface Select

Returns:: true if selected

select

public int select(Column[] cols)

Description copied from interface: Select

Select the given columns.

Specified by:: select in interface Select

Returns:: bit set of indexes of columns that were selected

select

public int select(Column[] cols,
                  Joins joins)

Description copied from interface: Select

Select the given columns.

Specified by:: select in interface Select

Returns:: bit set of indexes of columns that were selected

select

public void select(ClassMapping mapping,
                   int subclasses,
                   JDBCStore store,
                   JDBCFetchConfiguration fetch,
                   int eager)

Description copied from interface: Select

Select the columns of the given mapping, possibly including subclasses. This method should be called after all where conditions are added in case the given mapping batches other selects.

Specified by:: select in interface Select

select

public void select(ClassMapping mapping,
                   int subclasses,
                   JDBCStore store,
                   JDBCFetchConfiguration fetch,
                   int eager,
                   Joins joins)

Description copied from interface: Select

Select the columns of the given mapping, possibly including subclasses. This method should be called after all where conditions are added in case the given mapping batches other selects.

Specified by:: select in interface Select

selectIdentifier

public boolean selectIdentifier(Column col)

Description copied from interface: Select

Select the given column as one that can be used to get a count of distinct matches. It is not necessary to designate distinct identifiers when eagerly traversing the entire result of the select or when not using an LRSSize setting of count.

Specified by:: selectIdentifier in interface Select

Returns:: true if selected

selectIdentifier

public boolean selectIdentifier(Column col,
                                Joins joins)

Description copied from interface: Select

Specified by:: selectIdentifier in interface Select

Returns:: true if selected

selectIdentifier

public int selectIdentifier(Column[] cols)

Description copied from interface: Select

Select the given columns as ones that can be used to get a count of distinct matches. It is not necessary to designate distinct identifiers when eagerly traversing the entire result of the select or when not using an LRSSize setting of count.

Specified by:: selectIdentifier in interface Select

Returns:: bit set of indexes of columns that were selected

selectIdentifier

public int selectIdentifier(Column[] cols,
                            Joins joins)

Description copied from interface: Select

Specified by:: selectIdentifier in interface Select

Returns:: bit set of indexes of columns that were selected

selectIdentifier

public void selectIdentifier(ClassMapping mapping,
                             int subclasses,
                             JDBCStore store,
                             JDBCFetchConfiguration fetch,
                             int eager)

Description copied from interface: Select

Select the columns of the given mapping, possibly including subclasses. This method should be called after all where conditions are added in case the given mapping batches other selects. The primary key columns of the mapping can be used to get a count of distinct matches. It is not necessary to designate distinct identifiers when eagerly traversing the entire result of the select or when not using an LRSSize setting of count.

Specified by:: selectIdentifier in interface Select

selectIdentifier

public void selectIdentifier(ClassMapping mapping,
                             int subclasses,
                             JDBCStore store,
                             JDBCFetchConfiguration fetch,
                             int eager,
                             Joins joins)

Description copied from interface: Select

Specified by:: selectIdentifier in interface Select

selectPrimaryKey

public int selectPrimaryKey(ClassMapping mapping)

Description copied from interface: Select

Select the primary key columns of the given mapping, joining to superclasses as necessary to get all columns needed to construct an object id.

Specified by:: selectPrimaryKey in interface Select

Returns:: bit set of indexes of pk columns that were selected

selectPrimaryKey

public int selectPrimaryKey(ClassMapping mapping,
                            Joins joins)

Description copied from interface: Select

Select the primary key columns of the given mapping, joining to superclasses as necessary to get all columns needed to construct an object id.

Specified by:: selectPrimaryKey in interface Select

Returns:: bit set of indexes of pk columns that were selected

orderByPrimaryKey

public int orderByPrimaryKey(ClassMapping mapping,
                             boolean asc,
                             boolean sel)

Description copied from interface: Select

Order on the primary key columns of the given mapping, joining to superclasses as necessary to get all columns needed to construct an object id. Optionally selects ordering data if not already selected.

Specified by:: orderByPrimaryKey in interface Select

orderByPrimaryKey

public int orderByPrimaryKey(ClassMapping mapping,
                             boolean asc,
                             Joins joins,
                             boolean sel)

Description copied from interface: Select

Select and order on the primary key columns of the given mapping, joining to superclasses as necessary to get all columns needed to construct an object id. Optionally selects ordering data if not already selected.

Specified by:: orderByPrimaryKey in interface Select

orderByPrimaryKey

public int orderByPrimaryKey(ClassMapping mapping,
                             boolean asc,
                             Joins joins,
                             boolean sel,
                             boolean aliasOrder)

Allow unions to set aliases on order columns.

orderBy

public boolean orderBy(Column col,
                       boolean asc,
                       boolean sel)

Description copied from interface: Select

Order by the given column. Optionally selects ordering data if not already selected.

Specified by:: orderBy in interface Select

orderBy

public boolean orderBy(Column col,
                       boolean asc,
                       Joins joins,
                       boolean sel)

Description copied from interface: Select

Order by the given column. Optionally selects ordering data if not already selected.

Specified by:: orderBy in interface Select

orderBy

public int orderBy(Column[] cols,
                   boolean asc,
                   boolean sel)

Description copied from interface: Select

Order by the given columns. Optionally selects ordering data if not already selected.

Specified by:: orderBy in interface Select

orderBy

public int orderBy(Column[] cols,
                   boolean asc,
                   Joins joins,
                   boolean sel)

Description copied from interface: Select

Order by the given columns. Optionally selects ordering data if not already selected.

Specified by:: orderBy in interface Select

orderBy

public boolean orderBy(SQLBuffer sql,
                       boolean asc,
                       boolean sel,
                       Value selAs)

Description copied from interface: Select

Add an ORDER BY clause. Optionally selects ordering data if not already selected.

Specified by:: orderBy in interface Select

orderBy

public boolean orderBy(SQLBuffer sql,
                       boolean asc,
                       Joins joins,
                       boolean sel,
                       Value selAs)

Description copied from interface: Select

Add an ORDER BY clause. Optionally selects ordering data if not already selected.

Specified by:: orderBy in interface Select

orderBy

public boolean orderBy(String sql,
                       boolean asc,
                       boolean sel)

Description copied from interface: Select

Add an ORDER BY clause. Optionally selects ordering data if not already selected.

Specified by:: orderBy in interface Select

orderBy

public boolean orderBy(String sql,
                       boolean asc,
                       Joins joins,
                       boolean sel)

Description copied from interface: Select

Add an ORDER BY clause. Optionally selects ordering data if not already selected.

Specified by:: orderBy in interface Select

clearOrdering

public void clearOrdering()

Description copied from interface: Select

Clear odering conditions.

Specified by:: clearOrdering in interface Select

wherePrimaryKey

public void wherePrimaryKey(Object oid,
                            ClassMapping mapping,
                            JDBCStore store)

Description copied from interface: Select

Add where conditions setting the mapping's primary key to the given oid values. If the given mapping does not use oid values for its primary key, we will recursively join to its superclass until we find an ancestor that does.

Specified by:: wherePrimaryKey in interface Select

whereForeignKey

public void whereForeignKey(ForeignKey fk,
                            Object oid,
                            ClassMapping mapping,
                            JDBCStore store)

Description copied from interface: Select

Add where conditions setting the given foreign key to the given oid values.

Specified by:: whereForeignKey in interface Select

See Also:: Select.wherePrimaryKey(java.lang.Object, org.apache.openjpa.jdbc.meta.ClassMapping, org.apache.openjpa.jdbc.kernel.JDBCStore)

where

public void where(Joins joins)

Description copied from interface: Select

Add the given where conditions.

Specified by:: where in interface Select

where

public void where(SQLBuffer sql)

Description copied from interface: Select

Add the given where conditions.

Specified by:: where in interface Select

where

public void where(SQLBuffer sql,
                  Joins joins)

Description copied from interface: Select

Add the given where conditions.

Specified by:: where in interface Select

where

public void where(String sql)

Description copied from interface: Select

Add the given where conditions.

Specified by:: where in interface Select

where

public void where(String sql,
                  Joins joins)

Description copied from interface: Select

Add the given where conditions.

Specified by:: where in interface Select

having

public void having(SQLBuffer sql)

Description copied from interface: Select

Add the given having conditions.

Specified by:: having in interface Select

having

public void having(SQLBuffer sql,
                   Joins joins)

Description copied from interface: Select

Add the given having conditions.

Specified by:: having in interface Select

having

public void having(String sql)

Description copied from interface: Select

Add the given having conditions.

Specified by:: having in interface Select

having

public void having(String sql,
                   Joins joins)

Description copied from interface: Select

Add the given having conditions.

Specified by:: having in interface Select

groupBy

public void groupBy(SQLBuffer sql)

Description copied from interface: Select

Add a GROUP BY clause.

Specified by:: groupBy in interface Select

groupBy

public void groupBy(SQLBuffer sql,
                    Joins joins)

Description copied from interface: Select

Add a GROUP BY clause.

Specified by:: groupBy in interface Select

groupBy

public void groupBy(String sql)

Description copied from interface: Select

Add a GROUP BY clause.

Specified by:: groupBy in interface Select

groupBy

public void groupBy(String sql,
                    Joins joins)

Description copied from interface: Select

Add a GROUP BY clause.

Specified by:: groupBy in interface Select

groupBy

public void groupBy(Column col)

Description copied from interface: Select

Group by the given column.

Specified by:: groupBy in interface Select

groupBy

public void groupBy(Column col,
                    Joins joins)

Description copied from interface: Select

Group by the given column.

Specified by:: groupBy in interface Select

groupBy

public void groupBy(Column[] cols)

Description copied from interface: Select

Group by the given columns.

Specified by:: groupBy in interface Select

groupBy

public void groupBy(Column[] cols,
                    Joins joins)

Description copied from interface: Select

Group by the given columns.

Specified by:: groupBy in interface Select

groupBy

public void groupBy(ClassMapping mapping,
                    int subclasses,
                    JDBCStore store,
                    JDBCFetchConfiguration fetch)

Description copied from interface: Select

Group by the columns of the given mapping, possibly including subclasses. Assumes EAGER_NONE.

Specified by:: groupBy in interface Select

groupBy

public void groupBy(ClassMapping mapping,
                    int subclasses,
                    JDBCStore store,
                    JDBCFetchConfiguration fetch,
                    Joins joins)

Description copied from interface: Select

Group by the columns of the given mapping, possibly including subclasses. Assumes EAGER_NONE.

Specified by:: groupBy in interface Select

whereClone

public SelectExecutor whereClone(int sels)

Description copied from interface: Select

Return a SELECT with the same joins and where conditions as this one.

Specified by:: whereClone in interface Select

Parameters:: sels - number of selects to UNION together; ignored if <= 1

fullClone

public SelectExecutor fullClone(int sels)

Description copied from interface: Select

Return a SELECT that is a complete clone of this one.

Specified by:: fullClone in interface Select

Parameters:: sels - number of selects to UNION together; ignored if <= 1

eagerClone

public SelectExecutor eagerClone(FieldMapping key,
                                 int eagerType,
                                 boolean toMany,
                                 int sels)

Description copied from interface: Select

Return a select that will be eagerly executed with this one, or null if the select cannot be created for the given key and join type. If the join type is inner or outer, then this select instance will be returned. Otherwise, the returned select will have a clone of this select's where conditions and joins but will be independent.

Specified by:: eagerClone in interface Select

Parameters:: key - the key for the eager select; eagerType - one of the EAGER_* constants; toMany - whether the eager join is to-many; sels - number of selects to UNION together; ignored if <= 1

getEagerMap

public Map getEagerMap()

Return view of eager selects. May be null.

logEagerRelations

public void logEagerRelations()

Description copied from interface: Select

Extended trace that logs eager relations

Specified by:: logEagerRelations in interface Select

getEager

public SelectExecutor getEager(FieldMapping key)

Description copied from interface: Select

Return the eager select for the given key.

Specified by:: getEager in interface Select

newJoins

public Joins newJoins()

Description copied from interface: Select

Return a new instance to use for joining.

Specified by:: newJoins in interface Select

newOuterJoins

public Joins newOuterJoins()

Description copied from interface: Select

Return a new instance to use for outer joining.

Specified by:: newOuterJoins in interface Select

append

public void append(SQLBuffer buf,
                   Joins joins)

Description copied from interface: Select

Append the given joins to the given buffer.

Specified by:: append in interface Select

and

public Joins and(Joins joins1,
                 Joins joins2)

Description copied from interface: Select

AND the given joins together. The given joins will be hollowed in the process.

Specified by:: and in interface Select

getSelect

public Select getSelect()

The select owner of this join

Returns:

or

public Joins or(Joins joins1,
                Joins joins2)

Description copied from interface: Select

OR the given joins together. The common joins will be removed in the process.

Specified by:: or in interface Select

outer

public Joins outer(Joins joins)

Description copied from interface: Select

Return a join set making the given joins outer joins.

Specified by:: outer in interface Select

toString

public String toString()

Description copied from interface: Select

Implement toString to generate SQL string for profiling/debuggging.

Specified by:: toString in interface Select
Overrides:: toString in class Object

isOuter

public boolean isOuter()

Description copied from interface: Joins

Whether this joins path results in outer joins.

setOuter

public org.apache.openjpa.jdbc.sql.PathJoins setOuter(boolean outer)

Mark this as an outer joins set.

isDirty

public boolean isDirty()

Return true if this instance has a path, any joins, or a variable.

path

public StringBuilder path()

Return the relation path traversed by these joins, or null if none.

joins

public org.apache.openjpa.jdbc.sql.JoinSet joins()

Return the set of Join elements, or null if none.

joinCount

public int joinCount()

Return the maximum number of joins contained in this instance at any time.

nullJoins

public void nullJoins()

Null the set of Join elements.

isEmpty

public boolean isEmpty()

Description copied from interface: Joins

Whether we have any joins.

crossJoin

public Joins crossJoin(Table localTable,
                       Table foreignTable)

Description copied from interface: Joins

Perform a cross join on the given tables.

join

public Joins join(ForeignKey fk,
                  boolean inverse,
                  boolean toMany)

Description copied from interface: Joins

Join the columns of the given foreign key.

outerJoin

public Joins outerJoin(ForeignKey fk,
                       boolean inverse,
                       boolean toMany)

Description copied from interface: Joins

Join the columns of the given foreign key.

joinRelation

public Joins joinRelation(String name,
                          ForeignKey fk,
                          ClassMapping target,
                          int subs,
                          boolean inverse,
                          boolean toMany)

Description copied from interface: Joins

Join the columns of the given foreign key, which represents a relation via the given field name.

outerJoinRelation

public Joins outerJoinRelation(String name,
                               ForeignKey fk,
                               ClassMapping target,
                               int subs,
                               boolean inverse,
                               boolean toMany)

Description copied from interface: Joins

Join the columns of the given foreign key, which represents a relation via the given field name.

setVariable

public Joins setVariable(String var)

Description copied from interface: Joins

Set the variable name being traversed into with the next join.

setSubselect

public Joins setSubselect(String alias)

Description copied from interface: Joins

Set the subquery alias.

clone

public SelectImpl clone(Context ctx)

newSelects

protected SelectImpl.Selects newSelects()

setCorrelatedVariable

public Joins setCorrelatedVariable(String var)

Description copied from interface: Joins

Set the correlated variable name being traversed into with the next join.

setJoinContext

public Joins setJoinContext(Context ctx)

Description copied from interface: Joins

Set subquery context when traversing into the next join is in transition from parent context to subquery.

getCorrelatedVariable

public String getCorrelatedVariable()

Description copied from interface: Joins

Return correlated variable name

Returns:

moveJoinsToParent

public void moveJoinsToParent()

Description copied from interface: Joins

Move joins that belong to subquery's parent

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org.apache.openjpa.jdbc.sql Class SelectImpl

_selects

_outer

SelectImpl

toOrderAlias

setContext

ctx

setSchemaAlias

getConfiguration

toSelect

getSQL

toSelectCount

getAutoDistinct

setAutoDistinct

isDistinct

setDistinct

isLRS

setLRS

getExpectedResultCount

setExpectedResultCount

getJoinSyntax

setJoinSyntax

supportsRandomAccess

supportsLocking

hasMultipleSelects

getCount

execute

execute

execute

prepareStatement

prepareStatement

executeQuery

executeQuery

getCount

getEagerResult

indexOf

getSubselects

getParent

getSubselectPath

setParent

setHasSubselect

getHasSubselect

getAliases

removeAlias

getTables

removeTable

getFromSelect

setFromSelect

hasEagerJoin

hasJoin

isSelected

getTableAliases

getSelects

getSelectAliases

getIdentifierAliases

getOrdering

getGrouping

getWhere

getHaving

addJoinClassConditions

getJoins

getJoinIterator

getStartIndex

getEndIndex

setRange

getColumnAlias

getColumnAlias

getColumnAlias

getColumnAlias

getColumnAlias

isAggregate

setAggregate

isLob

setLob

clearSelects

select

select

select

select

selectPlaceholder

org.apache.openjpa.jdbc.sql
Class SelectImpl