Package org.apache.openjpa.jdbc.kernel

Class SQLStoreQuery

java.lang.Object

org.apache.openjpa.kernel.AbstractStoreQuery

org.apache.openjpa.jdbc.kernel.SQLStoreQuery

All Implemented Interfaces:

Serializable, QueryOperations, StoreQuery

Direct Known Subclasses:

PreparedSQLStoreQuery

public class SQLStoreQuery
extends AbstractStoreQuery

A SQL query.

Author:

Abe White

See Also:

• Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	SQLStoreQuery.SQLExecutor	Executes the filter as a SQL query.

Nested classes/interfaces inherited from class org.apache.openjpa.kernel.AbstractStoreQuery

AbstractStoreQuery.AbstractExecutor

Nested classes/interfaces inherited from interface org.apache.openjpa.kernel.StoreQuery

StoreQuery.Executor, StoreQuery.Range

Field Summary

Fields inherited from class org.apache.openjpa.kernel.AbstractStoreQuery

ctx

Fields inherited from interface org.apache.openjpa.kernel.QueryOperations

OP_DELETE, OP_SELECT, OP_UPDATE

Fields inherited from interface org.apache.openjpa.kernel.StoreQuery

EMPTY_BOOLEANS, EMPTY_CLASSES, EMPTY_METAS, EMPTY_OBJECTS, EMPTY_ORDERED_PARAMS, EMPTY_PARAMS, EMPTY_STRINGS

Constructor Summary

Constructors

Constructor	Description
SQLStoreQuery(JDBCStore store)	Construct a query managed by the given context.

Method Summary

Modifier and Type	Method	Description
JDBCStore	getStore()
StoreQuery.Executor	newDataStoreExecutor(ClassMetaData meta, boolean subclasses)	Return an executor for datastore execution of this query.
boolean	requiresCandidateType()	Whether this query requires a candidate class.
boolean	requiresParameterDeclarations()	Whether this query requires parameters to be declared.
static String	substituteParams(String sql, List<Integer> paramOrder)	Utility method to substitute '?
boolean	supportsDataStoreExecution()	True if this query supports datastore execution, false if it can only run in memory.
boolean	supportsParameterDeclarations()	Whether this query supports declared parameters.

Methods inherited from class org.apache.openjpa.kernel.AbstractStoreQuery

evaluate, getAggregateListener, getCompilation, getContext, getFilterListener, invalidateCompilation, newCompilation, newCompilationKey, newInMemoryExecutor, populateFromCompilation, setContext, setQuery, supportsAbstractExecutors, supportsInMemoryExecution

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

SQLStoreQuery

public SQLStoreQuery(JDBCStore store)

Construct a query managed by the given context.

Method Details

getStore

public JDBCStore getStore()

supportsParameterDeclarations

public boolean supportsParameterDeclarations()

Description copied from interface: StoreQuery

Whether this query supports declared parameters.

Specified by:

supportsParameterDeclarations in interface StoreQuery

Overrides:

supportsParameterDeclarations in class AbstractStoreQuery

supportsDataStoreExecution

public boolean supportsDataStoreExecution()

Description copied from interface: StoreQuery

True if this query supports datastore execution, false if it can only run in memory.

Specified by:

supportsDataStoreExecution in interface StoreQuery

Overrides:

supportsDataStoreExecution in class AbstractStoreQuery

newDataStoreExecutor

public StoreQuery.Executor newDataStoreExecutor(ClassMetaData meta,
 boolean subclasses)

Description copied from interface: StoreQuery

Return an executor for datastore execution of this query. Executors must be cachable and thread safe. If this class returns true from StoreQuery.supportsAbstractExecutors(), the given metadata will always be for the candidate class of this query, or possibly null if the candidate class is not itself persistence capable (like an interface or abstract base class). Otherwise, the given type will be a mapped class.

Specified by:

newDataStoreExecutor in interface StoreQuery

Overrides:

newDataStoreExecutor in class AbstractStoreQuery

subclasses - whether to include dependent mapped subclasses in the results; independent subclasses should never be included

requiresCandidateType

public boolean requiresCandidateType()

Description copied from interface: StoreQuery

Whether this query requires a candidate class.

Specified by:

requiresCandidateType in interface StoreQuery

Overrides:

requiresCandidateType in class AbstractStoreQuery

requiresParameterDeclarations

public boolean requiresParameterDeclarations()

Description copied from interface: StoreQuery

Whether this query requires parameters to be declared.

Specified by:

requiresParameterDeclarations in interface StoreQuery

Overrides:

requiresParameterDeclarations in class AbstractStoreQuery

substituteParams

public static String substituteParams(String sql,
 List<Integer> paramOrder)
                               throws IOException

Utility method to substitute '?num' for parameters in the given SQL statement, and fill-in the order of the parameter tokens

Throws:

IOException