org.apache.openjpa.jdbc.sql
Class DB2Dictionary

java.lang.Object
  org.apache.openjpa.jdbc.sql.DBDictionary
      org.apache.openjpa.jdbc.sql.AbstractDB2Dictionary
          org.apache.openjpa.jdbc.sql.DB2Dictionary

All Implemented Interfaces:

JoinSyntaxes, Configurable, ConnectionDecorator, LoggingConnectionDecorator.SQLWarningHandler

public class DB2Dictionary
extends AbstractDB2Dictionary

Dictionary for IBM DB2 database.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.openjpa.jdbc.sql.DBDictionary

DBDictionary.SerializedData

Field Summary

protected String	databaseProductName
protected String	databaseProductVersion
static int	db2ISeriesV5R3OrEarlier
static int	db2ISeriesV5R4OrLater
protected int	db2ServerType
static int	db2UDBV81OrEarlier
static int	db2UDBV82OrLater
static int	db2ZOSV8xOrLater
protected int	maj
protected int	min
String	optimizeClause
String	rowClause

Fields inherited from class org.apache.openjpa.jdbc.sql.AbstractDB2Dictionary

varcharCastLength

Fields inherited from class org.apache.openjpa.jdbc.sql.DBDictionary

allowsAliasInBulkClause, arrayTypeName, autoAssignClause, autoAssignTypeName, batchLimit, bigintTypeName, binaryTypeName, bitLengthFunction, bitTypeName, blobBufferSize, blobTypeName, booleanTypeName, castFunction, catalogSeparator, CENTI, characterColumnSize, charTypeName, clobBufferSize, clobTypeName, closePoolSQL, concatenateDelimiter, concatenateFunction, conf, connected, CONS_NAME_AFTER, CONS_NAME_BEFORE, CONS_NAME_MID, constraintNameMode, createPrimaryKeys, crossJoinClause, currentDateFunction, currentTimeFunction, currentTimestampFunction, datePrecision, dateTypeName, DECI, decimalTypeName, distinctCountColumnSeparator, distinctTypeName, doubleTypeName, driverVendor, dropTableSQL, EMPTY_STRING_LIST, fixedSizeTypeNames, fixedSizeTypeNameSet, floatTypeName, forUpdateClause, getStringVal, inClauseLimit, initializationSQL, innerJoinClause, integerTypeName, javaObjectTypeName, joinSyntax, lastGeneratedKeyQuery, log, longVarbinaryTypeName, longVarcharTypeName, maxAutoAssignNameLength, maxColumnNameLength, maxConstraintNameLength, maxEmbeddedBlobSize, maxEmbeddedClobSize, maxIndexesPerTable, maxIndexNameLength, maxTableNameLength, MICRO, MILLI, NAME_ANY, NAME_SEQUENCE, NAME_TABLE, NANO, nextSequenceQuery, NO_BATCH, nullTypeName, numericTypeName, otherTypeName, outerJoinClause, platform, RANGE_POST_DISTINCT, RANGE_POST_LOCK, RANGE_POST_SELECT, RANGE_PRE_DISTINCT, rangePosition, realTypeName, refTypeName, requiresAliasForSubselect, requiresAutoCommitForMetaData, requiresCastForComparisons, requiresCastForMathFunctions, requiresConditionForCrossJoin, requiresTargetForDelete, reservedWords, reservedWordSet, SCHEMA_CASE_LOWER, SCHEMA_CASE_PRESERVE, SCHEMA_CASE_UPPER, schemaCase, searchStringEscape, SEC, selectWords, selectWordSet, sequenceNameSQL, sequenceSchemaSQL, sequenceSQL, simulateLocking, smallintTypeName, SQL_STATE_CODES, storageLimitationsFatal, storeCharsAsNumbers, storeLargeNumbersAsStrings, stringLengthFunction, structTypeName, substringFunctionName, supportsAlterTableWithAddColumn, supportsAlterTableWithDropColumn, supportsAutoAssign, supportsCascadeDeleteAction, supportsCascadeUpdateAction, supportsComments, supportsCorrelatedSubselect, supportsDefaultDeleteAction, supportsDefaultUpdateAction, supportsDeferredConstraints, supportsForeignKeys, supportsHaving, supportsLockingWithDistinctClause, supportsLockingWithInnerJoin, supportsLockingWithMultipleTables, supportsLockingWithOrderClause, supportsLockingWithOuterJoin, supportsLockingWithSelectRange, supportsModOperator, supportsMultipleNontransactionalResultSets, supportsNullDeleteAction, supportsNullTableForGetColumns, supportsNullTableForGetImportedKeys, supportsNullTableForGetIndexInfo, supportsNullTableForGetPrimaryKeys, supportsNullUpdateAction, supportsQueryTimeout, supportsRestrictDeleteAction, supportsRestrictUpdateAction, supportsSchemaForGetColumns, supportsSchemaForGetTables, supportsSelectEndIndex, supportsSelectForUpdate, supportsSelectStartIndex, supportsSubselect, supportsTimestampNanos, supportsUniqueConstraints, supportsXMLColumn, systemSchemas, systemSchemaSet, systemTables, systemTableSet, tableForUpdateClause, tableTypes, timestampTypeName, timeTypeName, tinyintTypeName, toLowerCaseFunction, toUpperCaseFunction, trimBothFunction, trimLeadingFunction, trimTrailingFunction, typeModifierSet, UNLIMITED, useGetBestRowIdentifierForPrimaryKeys, useGetBytesForBlobs, useGetObjectForBlobs, useGetStringForClobs, useSchemaName, useSetBytesForBlobs, useSetStringForClobs, validationSQL, varbinaryTypeName, varcharTypeName, VENDOR_DATADIRECT, VENDOR_OTHER, xmlTypeName

Fields inherited from interface org.apache.openjpa.jdbc.sql.JoinSyntaxes

SYNTAX_DATABASE, SYNTAX_SQL92, SYNTAX_TRADITIONAL

Constructor Summary

DB2Dictionary()

Method Summary

String	addCastAsType(String func, Val val) add CAST for a function operator where operand is a param
void	appendCast(SQLBuffer buf, FilterValue val, int type) Cast the specified value to the specified type.
protected void	appendLength(SQLBuffer buf, int type)
protected void	appendSelect(SQLBuffer selectSQL, Object alias, Select sel, int idx) Append elem to selectSQL.
protected void	appendSelectRange(SQLBuffer buf, long start, long end, boolean subselect) If this dictionary can select ranges, use this method to append the range SQL.
void	appendXmlComparison(SQLBuffer buf, String op, FilterValue lhs, FilterValue rhs, boolean lhsxml, boolean rhsxml) If this dictionary supports XML type, use this method to append xml predicate.
void	connectedConfiguration(Connection conn) This method is called when the dictionary first sees any connection.
void	createIndexIfNecessary(Schema schema, String table, Column pkColumn) Create an index if necessary for some database tables
Connection	decorate(Connection conn) Decorate the given connection if needed.
int	getBatchLimit() Return the batch limit.
String	getCastFunction(Val val, String func) Return the correct CAST function syntax
String[]	getCreateSequenceSQL(Sequence seq) Return a series of SQL statements to create the given sequence.
int	getDb2ServerType()
protected String	getForUpdateClause(JDBCFetchConfiguration fetch, boolean isForUpdate, Select sel) Get the update clause for the query based on the updateClause and isolationLevel hints
protected String	getOptimizeClause(Select sel)
protected String	getSequencesSQL(String schemaName, String sequenceName) Return the SQL needed to select the list of sequences.
void	indexOf(SQLBuffer buf, FilterValue str, FilterValue find, FilterValue start) Invoke this database's indexOf function.
boolean	isDB2ISeriesV5R3OrEarlier()
boolean	isDB2ISeriesV5R4OrLater()
boolean	isDB2UDBV81OrEarlier()
boolean	isDB2UDBV82OrLater()
boolean	isDB2ZOSV8xOrLater()
OpenJPAException	newStoreException(String msg, SQLException[] causes, Object failed) Return a new exception that wraps causes.
boolean	supportsRandomAccessResultSet(Select sel, boolean forUpdate) Return false if the given select requires a forward-only result set.

Methods inherited from class org.apache.openjpa.jdbc.sql.AbstractDB2Dictionary

substring

Methods inherited from class org.apache.openjpa.jdbc.sql.DBDictionary

appendCast, appendNumericCast, appendSize, appendUpdates, assertSupport, calculateValue, canOuterJoin, closeDataSource, comment, comparison, convertSchemaCase, copy, copy, deleteStream, endConfiguration, executeQuery, getAddColumnSQL, getAddForeignKeySQL, getAddPrimaryKeySQL, getArray, getAsciiStream, getBigDecimal, getBigInteger, getBinaryStream, getBlob, getBlobObject, getBoolean, getByte, getBytes, getCalendar, getCatalogNameForMetadata, getChar, getCharacterStream, getClob, getClobString, getColumnNameForMetadata, getColumns, getCreateIndexSQL, getCreateTableSQL, getDate, getDate, getDeclareColumnSQL, getDeleteTableContentsSQL, getDeleteTargets, getDouble, getDropColumnSQL, getDropForeignKeySQL, getDropIndexSQL, getDropPrimaryKeySQL, getDropSequenceSQL, getDropTableSQL, getFloat, getForeignKeyConstraintSQL, getFrom, getFromSelect, getFullName, getFullName, getFullName, getGeneratedKey, getGeneratedKeySequenceName, getImportedKeys, getIndexInfo, getInt, getJDBCType, getKey, getLOBStream, getLocale, getLong, getNumber, getObject, getPlaceholderValueString, getPreferredType, getPrimaryKeyConstraintSQL, getPrimaryKeys, getPrimaryKeysFromBestRowIdentifier, getPrimaryKeysFromGetPrimaryKeys, getRef, getSchemaCase, getSchemaNameForMetadata, getSelectOperation, getSelects, getSequence, getSequences, getShort, getSQLStates, getString, getTableNameForMetadata, getTables, getTime, getTimestamp, getTypeName, getTypeName, getUniqueConstraintSQL, getValidColumnName, getValidColumnName, getValidForeignKeyName, getValidIndexName, getValidPrimaryKeyName, getValidSequenceName, getValidTableName, getValidUniqueName, getVersionColumn, getWhere, handleWarning, insertBlobForStreamingLoad, insertClobForStreamingLoad, insertSize, isSelect, isSystemIndex, isSystemSequence, isSystemTable, makeNameValid, makeNameValid, mathFunction, newColumn, newForeignKey, newIndex, newPrimaryKey, newSequence, newTable, prepareStatement, putBytes, putChars, putString, refSchemaComponents, serialize, setArray, setAsciiStream, setBatchLimit, setBigDecimal, setBigInteger, setBinaryStream, setBlob, setBlobObject, setBoolean, setByte, setBytes, setCalendar, setChar, setCharacterStream, setClob, setClobString, setConfiguration, setDate, setDate, setDouble, setFloat, setInt, setJoinSyntax, setLocale, setLong, setNull, setNumber, setObject, setRef, setShort, setString, setTime, setTimestamp, setTyped, setUnknown, shorten, startConfiguration, storageWarning, supportsDeferredForeignKeyConstraints, supportsDeferredUniqueConstraints, supportsDeleteAction, supportsLocking, supportsUpdateAction, toBulkOperation, toDelete, toNativeJoin, toOperation, toOperation, toSelect, toSelect, toSelect, toSelect, toSelect, toSelectCount, toSQL92Join, toTraditionalJoin, toUpdate, updateBlob, updateClob, validateBatchProcess, validateDBSpecificBatchProcess

Methods inherited from class java.lang.Object

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

Field Detail

optimizeClause

public String optimizeClause

rowClause

public String rowClause

db2ServerType

protected int db2ServerType

db2ISeriesV5R3OrEarlier

public static final int db2ISeriesV5R3OrEarlier

See Also:

Constant Field Values

db2UDBV81OrEarlier

public static final int db2UDBV81OrEarlier

See Also:

Constant Field Values

db2ZOSV8xOrLater

public static final int db2ZOSV8xOrLater

See Also:

Constant Field Values

db2UDBV82OrLater

public static final int db2UDBV82OrLater

See Also:

Constant Field Values

db2ISeriesV5R4OrLater

public static final int db2ISeriesV5R4OrLater

See Also:

Constant Field Values

databaseProductName

protected String databaseProductName

databaseProductVersion

protected String databaseProductVersion

maj

protected int maj

min

protected int min

Constructor Detail

DB2Dictionary

public DB2Dictionary()

Method Detail

supportsRandomAccessResultSet

public boolean supportsRandomAccessResultSet(Select sel,
                                             boolean forUpdate)

Description copied from class: DBDictionary

Return false if the given select requires a forward-only result set.

Overrides:

supportsRandomAccessResultSet in class DBDictionary

appendSelectRange

protected void appendSelectRange(SQLBuffer buf,
                                 long start,
                                 long end,
                                 boolean subselect)

Description copied from class: DBDictionary

If this dictionary can select ranges, use this method to append the range SQL.

Overrides:

appendSelectRange in class DBDictionary

appendSelect

protected void appendSelect(SQLBuffer selectSQL,
                            Object alias,
                            Select sel,
                            int idx)

Description copied from class: DBDictionary

Append elem to selectSQL.

Overrides:

appendSelect in class DBDictionary

Parameters:

selectSQL - The SQLBuffer to append to.

getCreateSequenceSQL

public String[] getCreateSequenceSQL(Sequence seq)

Description copied from class: DBDictionary

Return a series of SQL statements to create the given sequence. Returns CREATE SEQUENCE <sequence name>[ START WITH <start>] [ INCREMENT BY <increment>] by default.

Overrides:

getCreateSequenceSQL in class DBDictionary

getSequencesSQL

protected String getSequencesSQL(String schemaName,
                                 String sequenceName)

Description copied from class: DBDictionary

Return the SQL needed to select the list of sequences.

Overrides:

getSequencesSQL in class DBDictionary

decorate

public Connection decorate(Connection conn)
                    throws SQLException

Description copied from class: DBDictionary

Decorate the given connection if needed. Some databases require special handling for JDBC bugs. This implementation issues any DBDictionary.initializationSQL that has been set for the dictionary but does not decoreate the connection.

Specified by:

decorate in interface ConnectionDecorator

Overrides:

decorate in class DBDictionary

Throws:

SQLException

connectedConfiguration

public void connectedConfiguration(Connection conn)
                            throws SQLException

Description copied from class: DBDictionary

This method is called when the dictionary first sees any connection. It is used to initialize dictionary metadata if needed. If you override this method, be sure to call super.connectedConfiguration.

Overrides:

connectedConfiguration in class DBDictionary

Throws:

SQLException

getForUpdateClause

protected String getForUpdateClause(JDBCFetchConfiguration fetch,
                                    boolean isForUpdate,
                                    Select sel)

Get the update clause for the query based on the updateClause and isolationLevel hints

Overrides:

getForUpdateClause in class DBDictionary

isDB2UDBV82OrLater

public boolean isDB2UDBV82OrLater()

isDB2ZOSV8xOrLater

public boolean isDB2ZOSV8xOrLater()

isDB2ISeriesV5R3OrEarlier

public boolean isDB2ISeriesV5R3OrEarlier()

isDB2ISeriesV5R4OrLater

public boolean isDB2ISeriesV5R4OrLater()

isDB2UDBV81OrEarlier

public boolean isDB2UDBV81OrEarlier()

getOptimizeClause

protected String getOptimizeClause(Select sel)

newStoreException

public OpenJPAException newStoreException(String msg,
                                          SQLException[] causes,
                                          Object failed)

Description copied from class: DBDictionary

Return a new exception that wraps causes. However, the details of exactly what type of exception is returned can be determined by the implementation. This may take into account DB-specific exception information in causes.

Overrides:

newStoreException in class DBDictionary

getDb2ServerType

public int getDb2ServerType()

appendLength

protected void appendLength(SQLBuffer buf,
                            int type)

Overrides:

appendLength in class DBDictionary

appendXmlComparison

public void appendXmlComparison(SQLBuffer buf,
                                String op,
                                FilterValue lhs,
                                FilterValue rhs,
                                boolean lhsxml,
                                boolean rhsxml)

If this dictionary supports XML type, use this method to append xml predicate.

Overrides:

appendXmlComparison in class DBDictionary

Parameters:

buf - the SQL buffer to write the comparison

op - the comparison operation to perform

lhs - the left hand side of the comparison

rhs - the right hand side of the comparison

lhsxml - indicates whether the left operand maps to xml

rhsxml - indicates whether the right operand maps to xml

addCastAsType

public String addCastAsType(String func,
                            Val val)

add CAST for a function operator where operand is a param

Overrides:

addCastAsType in class DBDictionary

Parameters:

func - function name

val - type

Returns:

updated string (func)

getBatchLimit

public int getBatchLimit()

Return the batch limit. If the batchLimit is -1, change it to 100 for best performance

Overrides:

getBatchLimit in class DBDictionary

getCastFunction

public String getCastFunction(Val val,
                              String func)

Return the correct CAST function syntax

Overrides:

getCastFunction in class DBDictionary

Parameters:

val - operand of cast

func - original string

Returns:

a String with the correct CAST function syntax

indexOf

public void indexOf(SQLBuffer buf,
                    FilterValue str,
                    FilterValue find,
                    FilterValue start)

Description copied from class: DBDictionary

Invoke this database's indexOf function.

Overrides:

indexOf in class AbstractDB2Dictionary

Parameters:

buf - the SQL buffer to write the indexOf invocation to

str - a query value representing the target string

find - a query value representing the search string

start - a query value representing the start index, or null to start at the beginning

appendCast

public void appendCast(SQLBuffer buf,
                       FilterValue val,
                       int type)

Cast the specified value to the specified type.

Parameters:

buf - the buffer to append the cast to

val - the value to cast

type - the type of the case, e.g. Types.NUMERIC

createIndexIfNecessary

public void createIndexIfNecessary(Schema schema,
                                   String table,
                                   Column pkColumn)

Create an index if necessary for some database tables

Overrides:

createIndexIfNecessary in class DBDictionary