Class DB2Platform
- java.lang.Object
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- org.eclipse.persistence.internal.databaseaccess.DatasourcePlatform
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- org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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- org.eclipse.persistence.platform.database.DatabasePlatform
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- org.eclipse.persistence.platform.database.DB2Platform
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- All Implemented Interfaces:
java.io.Serializable
,java.lang.Cloneable
,org.eclipse.persistence.internal.core.databaseaccess.CorePlatform<org.eclipse.persistence.internal.helper.ConversionManager>
,org.eclipse.persistence.internal.databaseaccess.Platform
- Direct Known Subclasses:
DB2MainframePlatform
,DB2ZPlatform
,DerbyPlatform
public class DB2Platform extends DatabasePlatform
Purpose: Provides DB2 specific behavior.
Responsibilities:
- Support for schema creation.
- Native SQL for byte[], Date, Time, & Timestamp.
- Support for table qualified names.
- Support for stored procedures.
- Support for temp tables.
- Support for casting.
- Support for database functions.
- Support for identity sequencing.
- Support for SEQUENCE sequencing.
- Since:
- TOPLink/Java 1.0
- See Also:
- Serialized Form
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Field Summary
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Fields inherited from class org.eclipse.persistence.platform.database.DatabasePlatform
DEFAULT_VARCHAR_SIZE
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Constructor Summary
Constructors Constructor Description DB2Platform()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description ValueReadQuery
buildSelectQueryForIdentity()
INTERNAL: Build the identity query for native sequencing.ValueReadQuery
buildSelectQueryForSequenceObject(java.lang.String seqName, java.lang.Integer size)
INTERNAL: DB2 added SEQUENCE support as of (I believe) v8.boolean
dontBindUpdateAllQueryUsingTempTables()
INTERNAL: DB2 has issues with binding with temp table queries.int
getMaxFieldNameSize()
INTERNAL: returns the maximum number of characters that can be used in a field name on this platform.int
getMaxForeignKeyNameSize()
INTERNAL: returns the maximum number of characters that can be used in a foreign key name on this platform.int
getMaxUniqueKeyNameSize()
INTERNAL: returns the maximum number of characters that can be used in a unique key name on this platform.java.util.Vector
getNativeTableInfo(java.lang.String table, java.lang.String creator, org.eclipse.persistence.internal.sessions.AbstractSession session)
INTERNAL: Return the catalog information through using the native SQL catalog selects.java.lang.String
getProcedureAsString()
INTERNAL: Used for stored procedure defs.java.lang.String
getProcedureBeginString()
Used for stored procedure defs.java.lang.String
getProcedureCallHeader()
INTERNAL: Used for sp calls.java.lang.String
getProcedureEndString()
INTERNAL: Used for stored procedure defs.java.lang.String
getSelectForUpdateString()
INTERNAL: Used for pessimistic locking in DB2.org.eclipse.persistence.internal.helper.DatabaseTable
getTempTableForTable(org.eclipse.persistence.internal.helper.DatabaseTable table)
INTERNAL: DB2 temp table syntax.ValueReadQuery
getTimestampQuery()
INTERNAL: This method returns the query to select the timestamp from the server for DB2.void
initializeConnectionData(java.sql.Connection connection)
INTERNAL: Allow initialization from the connection.boolean
isAlterSequenceObjectSupported()
INTERNAL: DB2 added SEQUENCE support as of (I believe) v8.boolean
isDB2()
boolean
isDynamicSQLRequiredForFunctions()
INTERNAL DB2 has some issues with using parameters on certain functions and relations.boolean
isNullAllowedInSelectClause()
INTERNAL: DB2 does not allow NULL in select clause.java.util.Hashtable
maximumNumericValues()
INTERNAL: Builds a table of maximum numeric values keyed on java class.java.util.Hashtable
minimumNumericValues()
INTERNAL: Builds a table of minimum numeric values keyed on java class.void
printFieldIdentityClause(java.io.Writer writer)
INTERNAL: Append the receiver's field 'identity' constraint clause to a writer.void
printSQLSelectStatement(org.eclipse.persistence.internal.databaseaccess.DatabaseCall call, org.eclipse.persistence.internal.expressions.ExpressionSQLPrinter printer, org.eclipse.persistence.internal.expressions.SQLSelectStatement statement)
INTERNAL: Print the SQL representation of the statement on a stream, storing the fields in the DatabaseCall.boolean
shouldIgnoreException(java.sql.SQLException exception)
INTERNAL: Allow for the platform to ignore exceptions.boolean
shouldPrintForUpdateClause()
boolean
shouldPrintOutputTokenAtStart()
INTERNAL: This is required in the construction of the stored procedures with output parameters.boolean
shouldUseJDBCOuterJoinSyntax()
INTERNAL: JDBC defines and outer join syntax, many drivers do not support this.boolean
supportsGlobalTempTables()
INTERNAL: DB2 supports temp tables.boolean
supportsIdentity()
INTERNAL: Indicates whether the platform supports identity.boolean
supportsLockingQueriesWithMultipleTables()
INTERNAL: DB2 does not seem to allow FOR UPDATE on queries with multiple tables.boolean
supportsSequenceObjects()
INTERNAL: DB2 added SEQUENCE support as of (I believe) v8.void
writeParameterMarker(java.io.Writer writer, org.eclipse.persistence.internal.expressions.ParameterExpression parameter, org.eclipse.persistence.internal.sessions.AbstractRecord record, org.eclipse.persistence.internal.databaseaccess.DatabaseCall call)
INTERNAL: DB2 requires casting on certain operations, such as the CONCAT function, and parameterized queries of the form, ":param = :param".-
Methods inherited from class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
addBatch, addStructConverter, allowsSizeInProcedureArguments, appendLiteralToCall, appendParameter, appendParameterInternal, autoCommit, beginTransaction, buildBatchCriteria, buildBatchCriteriaForComplexId, buildCallWithReturning, buildCreateIndex, buildCreateIndex, buildDropIndex, buildDropIndex, buildProcedureCallString, buildSequenceObjectAlterIncrementWriter, buildSequenceObjectCreationWriter, buildSequenceObjectDeletionWriter, canBatchWriteWithOptimisticLocking, canBuildCallWithReturning, commitTransaction, computeMaxRowsForSQL, convertToDatabaseType, copyInto, createArray, createArray, createStruct, createStruct, executeBatch, executeStoredProcedure, freeTemporaryObject, getAssignmentString, getBatchBeginString, getBatchDelimiterString, getBatchEndString, getBatchRowCountAssignString, getBatchRowCountDeclareString, getBatchRowCountReturnString, getBatchWritingMechanism, getCastSizeForVarcharParameter, getClassTypes, getConnection, getConnectionUserName, getConstraintDeletionString, getCreateDatabaseSchemaString, getCreateViewString, getCreationInOutputProcedureToken, getCreationOutputProcedureToken, getCursorCode, getCustomModifyValueForCall, getDefaultSequenceTableName, getDriverSupportsNVarChar, getDropCascadeString, getDropDatabaseSchemaString, getFieldTypeDefinition, getFieldTypes, getFunctionCallHeader, getIdentifierQuoteCharacter, getIndexNamePrefix, getInOutputProcedureToken, getInputProcedureToken, getJDBCOuterJoinString, getJDBCType, getJDBCType, getJDBCTypeForSetNull, getJdbcTypeName, getMaxBatchWritingSize, getMaxIndexNameSize, getNoWaitString, getObjectFromResultSet, getOutputProcedureToken, getPartitioningCallback, getPingSQL, getProcedureArgumentSetter, getProcedureArgumentString, getProcedureCallTail, getQualifiedName, getQualifiedSequenceTableName, getRefValue, getRefValue, getSelectForUpdateNoWaitString, getSelectForUpdateOfString, getSelectForUpdateWaitString, getSequenceCounterFieldName, getSequenceNameFieldName, getSequencePreallocationSize, getSequenceTableName, getStatementCacheSize, getStoredProcedureParameterPrefix, getStoredProcedureTerminationToken, getStringBindingSize, getStructConverters, getTableCreationSuffix, getTransactionIsolation, getTypeConverters, getUniqueConstraintDeletionString, getUseNationalCharacterVaryingTypeForString, getVPDClearIdentifierQuery, getVPDCreationFunctionString, getVPDCreationPolicyString, getVPDDeletionString, getVPDSetIdentifierQuery, hasPartitioningCallback, initialize, isCastRequired, isForUpdateCompatibleWithDistinct, isInformixOuterJoin, isJDBCExecuteCompliant, isLobCompatibleWithDistinct, isLockTimeoutException, isOutputAllowWithResultSet, isRowCountOutputParameterRequired, isXDBDocument, minimumTimeIncrement, prepareBatchStatement, printFieldNotNullClause, printFieldNullClause, printFieldTypeSize, printFieldUnique, printStoredFunctionReturnKeyWord, printValuelist, printValuelist, registerOutputParameter, requiresNamedPrimaryKeyConstraints, requiresProcedureBrackets, requiresProcedureCallBrackets, requiresProcedureCallOuputToken, requiresTableInIndexDropDDL, requiresTypeNameToRegisterOutputParameter, requiresUniqueConstraintCreationOnTableCreate, retrieveFirstPrimaryKeyOrOne, rollbackTransaction, setBatchWritingMechanism, setCastSizeForVarcharParameter, setCursorCode, setDriverName, setDriverSupportsNVarChar, setIsCastRequired, setMaxBatchWritingSize, setParameterValueInDatabaseCall, setPartitioningCallback, setPingSQL, setPrintInnerJoinInWhereClause, setPrintOuterJoinInWhereClause, setSequenceCounterFieldName, setSequenceNameFieldName, setSequenceTableName, setShouldBindAllParameters, setShouldBindLiterals, setShouldCacheAllStatements, setShouldCreateIndicesOnForeignKeys, setShouldForceFieldNamesToUpperCase, setShouldIgnoreCaseOnFieldComparisons, setShouldOptimizeDataConversion, setShouldTrimStrings, setShouldUseRownumFiltering, setStatementCacheSize, setStoredProcedureTerminationToken, setStringBindingSize, setSupportsAutoCommit, setTableCreationSuffix, setTransactionIsolation, setUseJDBCStoredProcedureSyntax, setUseNationalCharacterVaryingTypeForString, setUsesBatchWriting, setUsesByteArrayBinding, setUsesJDBCBatchWriting, setUsesNativeBatchWriting, setUsesNativeSQL, setUsesStreamsForBinding, setUsesStringBinding, shouldAlwaysUseTempStorageForModifyAll, shouldBindAllParameters, shouldBindLiterals, shouldCacheAllStatements, shouldCreateIndicesForPrimaryKeys, shouldCreateIndicesOnForeignKeys, shouldCreateIndicesOnUniqueKeys, shouldForceFieldNamesToUpperCase, shouldIgnoreCaseOnFieldComparisons, shouldOptimizeDataConversion, shouldPrintAliasForUpdate, shouldPrintConstraintNameAfter, shouldPrintFieldIdentityClause, shouldPrintInnerJoinInWhereClause, shouldPrintInOutputTokenBeforeType, shouldPrintInputTokenAtStart, shouldPrintLockingClauseAfterWhereClause, shouldPrintOuterJoinInWhereClause, shouldPrintOutputTokenBeforeType, shouldPrintStoredProcedureArgumentNameInCall, shouldPrintStoredProcedureVariablesAfterBeginString, shouldTrimStrings, shouldUseCustomModifyForCall, shouldUseGetSetNString, shouldUseRownumFiltering, supportsANSIInnerJoinSyntax, supportsAutoCommit, supportsAutoConversionToNumericForArithmeticOperations, supportsConnectionUserName, supportsCountDistinctWithMultipleFields, supportsDeleteOnCascade, supportsForeignKeyConstraints, supportsIndexes, supportsIndividualTableLocking, supportsLocalTempTables, supportsNestingOuterJoins, supportsOuterJoinsWithBrackets, supportsPrimaryKeyConstraint, supportsStoredFunctions, supportsTempTables, supportsUniqueColumns, supportsUniqueKeyConstraints, supportsVPD, usesBatchWriting, usesByteArrayBinding, usesJDBCBatchWriting, usesNativeBatchWriting, usesNativeSQL, usesSequenceTable, usesStreamsForBinding, usesStringBinding, wasFailureCommunicationBased, writeAddColumnClause, writeCleanUpTempTableSql, writeCreateTempTableSql, writeDeleteFromTargetTableUsingTempTableSql, writeInsertIntoTableSql, writeLOB, writeTableCreationSuffix, writeUpdateOriginalFromTempTableSql
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Methods inherited from class org.eclipse.persistence.internal.databaseaccess.DatasourcePlatform
addSequence, addSequence, buildNativeCall, buildSelectQueryForIdentity, buildSelectQueryForSequenceObject, clone, convertObject, createConnectionCustomizer, getConversionManager, getDataTypesConvertedFrom, getDataTypesConvertedTo, getDefaultNativeSequenceToTable, getDefaultSequence, getDefaultSequenceToWrite, getEndDelimiter, getOperator, getPlatformOperators, getSelectSequenceQuery, getSequence, getSequences, getSequencesToWrite, getStartDelimiter, getTableQualifier, getTimestampFromServer, getUpdateSequenceQuery, hasDefaultSequence, initializeDefaultQueries, isAccess, isAttunity, isCloudscape, isDBase, isDerby, isFirebird, isH2, isHANA, isHSQL, isInformix, isMaxDB, isMySQL, isODBC, isOracle, isOracle9, isPervasive, isPointBase, isPostgreSQL, isSQLAnywhere, isSQLServer, isSybase, isSymfoware, isTimesTen, isTimesTen7, removeAllSequences, removeSequence, setConversionManager, setDefaultNativeSequenceToTable, setDefaultSequence, setEndDelimiter, setSelectSequenceNumberQuery, setSequencePreallocationSize, setSequences, setStartDelimiter, setTableQualifier, setTimestampQuery, setUpdateSequenceQuery, shouldNativeSequenceUseTransaction, shouldPrepare, shouldSelectDistinctIncludeOrderBy, shouldSelectIncludeOrderBy, supportsNativeSequenceNumbers, toString, usesPlatformDefaultSequence
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Method Detail
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initializeConnectionData
public void initializeConnectionData(java.sql.Connection connection) throws java.sql.SQLException
Description copied from class:org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
INTERNAL: Allow initialization from the connection.- Overrides:
initializeConnectionData
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
- Throws:
java.sql.SQLException
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getMaxFieldNameSize
public int getMaxFieldNameSize()
INTERNAL: returns the maximum number of characters that can be used in a field name on this platform.- Overrides:
getMaxFieldNameSize
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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getMaxForeignKeyNameSize
public int getMaxForeignKeyNameSize()
INTERNAL: returns the maximum number of characters that can be used in a foreign key name on this platform.- Overrides:
getMaxForeignKeyNameSize
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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getMaxUniqueKeyNameSize
public int getMaxUniqueKeyNameSize()
INTERNAL: returns the maximum number of characters that can be used in a unique key name on this platform.- Overrides:
getMaxUniqueKeyNameSize
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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getNativeTableInfo
public java.util.Vector getNativeTableInfo(java.lang.String table, java.lang.String creator, org.eclipse.persistence.internal.sessions.AbstractSession session)
INTERNAL: Return the catalog information through using the native SQL catalog selects. This is required because many JDBC driver do not support meta-data. Wildcards can be passed as arguments. This is currently not used.
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getProcedureCallHeader
public java.lang.String getProcedureCallHeader()
INTERNAL: Used for sp calls.- Overrides:
getProcedureCallHeader
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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getSelectForUpdateString
public java.lang.String getSelectForUpdateString()
INTERNAL: Used for pessimistic locking in DB2. Without the "WITH RS" the lock is not held.- Overrides:
getSelectForUpdateString
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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getProcedureEndString
public java.lang.String getProcedureEndString()
INTERNAL: Used for stored procedure defs.- Overrides:
getProcedureEndString
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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getProcedureBeginString
public java.lang.String getProcedureBeginString()
Used for stored procedure defs.- Overrides:
getProcedureBeginString
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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getProcedureAsString
public java.lang.String getProcedureAsString()
INTERNAL: Used for stored procedure defs.- Overrides:
getProcedureAsString
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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shouldPrintOutputTokenAtStart
public boolean shouldPrintOutputTokenAtStart()
INTERNAL: This is required in the construction of the stored procedures with output parameters.- Overrides:
shouldPrintOutputTokenAtStart
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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getTimestampQuery
public ValueReadQuery getTimestampQuery()
INTERNAL: This method returns the query to select the timestamp from the server for DB2.- Specified by:
getTimestampQuery
in interfaceorg.eclipse.persistence.internal.databaseaccess.Platform
- Overrides:
getTimestampQuery
in classorg.eclipse.persistence.internal.databaseaccess.DatasourcePlatform
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isDB2
public boolean isDB2()
- Specified by:
isDB2
in interfaceorg.eclipse.persistence.internal.databaseaccess.Platform
- Overrides:
isDB2
in classorg.eclipse.persistence.internal.databaseaccess.DatasourcePlatform
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maximumNumericValues
public java.util.Hashtable maximumNumericValues()
INTERNAL: Builds a table of maximum numeric values keyed on java class. This is used for type testing but might also be useful to end users attempting to sanitize values.NOTE: BigInteger & BigDecimal maximums are dependent upon their precision & Scale
- Overrides:
maximumNumericValues
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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minimumNumericValues
public java.util.Hashtable minimumNumericValues()
INTERNAL: Builds a table of minimum numeric values keyed on java class. This is used for type testing but might also be useful to end users attempting to sanitize values.NOTE: BigInteger & BigDecimal minimums are dependent upon their precision & Scale
- Overrides:
minimumNumericValues
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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shouldIgnoreException
public boolean shouldIgnoreException(java.sql.SQLException exception)
INTERNAL: Allow for the platform to ignore exceptions. This is required for DB2 which throws no-data modified as an exception.- Overrides:
shouldIgnoreException
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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shouldUseJDBCOuterJoinSyntax
public boolean shouldUseJDBCOuterJoinSyntax()
INTERNAL: JDBC defines and outer join syntax, many drivers do not support this. So we normally avoid it.- Overrides:
shouldUseJDBCOuterJoinSyntax
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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buildSelectQueryForIdentity
public ValueReadQuery buildSelectQueryForIdentity()
INTERNAL: Build the identity query for native sequencing.- Overrides:
buildSelectQueryForIdentity
in classorg.eclipse.persistence.internal.databaseaccess.DatasourcePlatform
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printFieldIdentityClause
public void printFieldIdentityClause(java.io.Writer writer) throws ValidationException
INTERNAL: Append the receiver's field 'identity' constraint clause to a writer. Used by table creation with sequencing.- Overrides:
printFieldIdentityClause
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
- Throws:
ValidationException
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supportsIdentity
public boolean supportsIdentity()
INTERNAL: Indicates whether the platform supports identity. DB2 does through AS IDENTITY field types. This is used by sequencing.- Overrides:
supportsIdentity
in classorg.eclipse.persistence.internal.databaseaccess.DatasourcePlatform
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supportsGlobalTempTables
public boolean supportsGlobalTempTables()
INTERNAL: DB2 supports temp tables. This is used by UpdateAllQuerys.- Overrides:
supportsGlobalTempTables
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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getTempTableForTable
public org.eclipse.persistence.internal.helper.DatabaseTable getTempTableForTable(org.eclipse.persistence.internal.helper.DatabaseTable table)
INTERNAL: DB2 temp table syntax. This is used by UpdateAllQuerys.- Overrides:
getTempTableForTable
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
- Returns:
- DatabaseTable temorary table
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dontBindUpdateAllQueryUsingTempTables
public boolean dontBindUpdateAllQueryUsingTempTables()
INTERNAL: DB2 has issues with binding with temp table queries. This is used by UpdateAllQuerys.- Overrides:
dontBindUpdateAllQueryUsingTempTables
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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isNullAllowedInSelectClause
public boolean isNullAllowedInSelectClause()
INTERNAL: DB2 does not allow NULL in select clause. This is used by UpdateAllQuerys.- Overrides:
isNullAllowedInSelectClause
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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isDynamicSQLRequiredForFunctions
public boolean isDynamicSQLRequiredForFunctions()
INTERNAL DB2 has some issues with using parameters on certain functions and relations. This allows statements to disable binding only in these cases. If users set casting on, then casting is used instead of dynamic SQL.- Overrides:
isDynamicSQLRequiredForFunctions
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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writeParameterMarker
public void writeParameterMarker(java.io.Writer writer, org.eclipse.persistence.internal.expressions.ParameterExpression parameter, org.eclipse.persistence.internal.sessions.AbstractRecord record, org.eclipse.persistence.internal.databaseaccess.DatabaseCall call) throws java.io.IOException
INTERNAL: DB2 requires casting on certain operations, such as the CONCAT function, and parameterized queries of the form, ":param = :param". This method will write CAST operation to parameters if the type is known. This is not used by default, only if isCastRequired is set to true, by default dynamic SQL is used to avoid the issue in only the required cases.- Overrides:
writeParameterMarker
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
- Throws:
java.io.IOException
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supportsLockingQueriesWithMultipleTables
public boolean supportsLockingQueriesWithMultipleTables()
INTERNAL: DB2 does not seem to allow FOR UPDATE on queries with multiple tables. This is only used by testing to exclude these tests.- Overrides:
supportsLockingQueriesWithMultipleTables
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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buildSelectQueryForSequenceObject
public ValueReadQuery buildSelectQueryForSequenceObject(java.lang.String seqName, java.lang.Integer size)
INTERNAL: DB2 added SEQUENCE support as of (I believe) v8.- Overrides:
buildSelectQueryForSequenceObject
in classorg.eclipse.persistence.internal.databaseaccess.DatasourcePlatform
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supportsSequenceObjects
public boolean supportsSequenceObjects()
INTERNAL: DB2 added SEQUENCE support as of (I believe) v8.- Overrides:
supportsSequenceObjects
in classorg.eclipse.persistence.internal.databaseaccess.DatasourcePlatform
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isAlterSequenceObjectSupported
public boolean isAlterSequenceObjectSupported()
INTERNAL: DB2 added SEQUENCE support as of (I believe) v8.- Overrides:
isAlterSequenceObjectSupported
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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shouldPrintForUpdateClause
public boolean shouldPrintForUpdateClause()
- Overrides:
shouldPrintForUpdateClause
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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printSQLSelectStatement
public void printSQLSelectStatement(org.eclipse.persistence.internal.databaseaccess.DatabaseCall call, org.eclipse.persistence.internal.expressions.ExpressionSQLPrinter printer, org.eclipse.persistence.internal.expressions.SQLSelectStatement statement)
INTERNAL: Print the SQL representation of the statement on a stream, storing the fields in the DatabaseCall. This implementation works MaxRows and FirstResult into the SQL using DB2's ROWNUMBER() OVER() to filter values if shouldUseRownumFiltering is true.- Overrides:
printSQLSelectStatement
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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