Class PervasivePlatform
- 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.PervasivePlatform
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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
public class PervasivePlatform extends DatabasePlatform
Purpose: Provides Pervasive SQL DBMS specific behavior.
Pervasive SQL Platform file
Contributed by: Pervasive Software, Inc.
Contributed under bug: 392109Developed on Pervasive PSQL Server 11.30
- Eclipselink Core SRG Test passes with known limitations.
- Eclipselink JPA SRG Test passes with known limitations.
- Eclipselink stored procedure tests "CustomSQLTestModel", "StoredProcedureGeneratorModel" pass with known limitations.
Limitations
- Updates are not supported on joined queries or queries with group by.
- The platform method getSelectForUpdateString() currently returns an empty string. This is to avoid avoid joined queries with FOR UPDATE in them, which Pervasive does not support.
- Columns used in indexes must total no more than 255 bytes in length.
- Pervasive SQL does not support dynamic parameters in the SELECT list.
- IDENTITY columns are either 2- or 4-byte integers. Foreign keys referencing such columns must use the same datatypes.
- See Also:
- Serialized Form
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Field Summary
Fields Modifier and Type Field Description static intDEFAULT_CHAR_SIZE-
Fields inherited from class org.eclipse.persistence.platform.database.DatabasePlatform
DEFAULT_VARCHAR_SIZE
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Fields inherited from class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
batchWritingMechanism, castSizeForVarcharParameter, classTypes, cursorCode, DEFAULT_MAX_BATCH_WRITING_SIZE, DEFAULT_PARAMETERIZED_MAX_BATCH_WRITING_SIZE, driverName, driverSupportsNationalCharacterVarying, fieldTypes, IS_VALID_TIMEOUT, isCastRequired, maxBatchWritingSize, partitioningCallback, pingSQL, printInnerJoinInWhereClause, printOuterJoinInWhereClause, shouldBindAllParameters, shouldBindLiterals, shouldBindPartialParameters, shouldCacheAllStatements, shouldCreateIndicesOnForeignKeys, shouldForceBindAllParameters, shouldForceFieldNamesToUpperCase, shouldIgnoreCaseOnFieldComparisons, shouldOptimizeDataConversion, shouldTrimStrings, statementCacheSize, storedProcedureTerminationToken, stringBindingSize, structConverters, supportsAutoCommit, tableCreationSuffix, transactionIsolation, typeConverters, Types_NCLOB, Types_SQLXML, useJDBCStoredProcedureSyntax, useNationalCharacterVarying, useRownumFiltering, usesBatchWriting, usesByteArrayBinding, usesJDBCBatchWriting, usesNativeBatchWriting, usesNativeSQL, usesStreamsForBinding, usesStringBinding
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Fields inherited from class org.eclipse.persistence.internal.databaseaccess.DatasourcePlatform
conversionManager, dataTypesConvertedFromAClass, dataTypesConvertedToAClass, defaultNativeSequenceToTable, defaultSeqenceAtNextValue, defaultSequence, endDelimiter, platformOperators, sequences, sequencesLock, startDelimiter, supportsReturnGeneratedKeys, tableQualifier, timestampQuery
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Constructor Summary
Constructors Constructor Description PervasivePlatform()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description protected java.util.Map<java.lang.String,java.lang.Class>buildClassTypes()protected java.util.HashtablebuildFieldTypes()ValueReadQuerybuildSelectQueryForIdentity()INTERNAL: Build the identity query for native sequencing.protected ExpressionOperatordateToStringOperator()Cloned from MySQLPlatform.javaprotected java.lang.StringgetCreateTempTableSqlPrefix()INTERNAL:java.lang.StringgetInOutputProcedureToken()Pervasive uses the INOUT keyword, as opposed to "IN OUT".java.lang.StringgetInputProcedureToken()Pervasive uses IN prefix for INPUT parameters.java.lang.StringgetProcedureArgumentString()Pervasive uses ":" as prefix for procedure arguments.java.lang.StringgetProcedureBeginString()Pervasive requires BEGIN in a procedure statement.java.lang.StringgetProcedureCallHeader()Pervasive uses CALL or EXECUTE not CALL PROCEDURE or EXECUTE PROCEDUREjava.lang.StringgetProcedureEndString()Pervasive requires END in a procedure statement.java.lang.StringgetSelectForUpdateString()Temporary workaround to avoid joined queries with FOR UPDATE in themjava.lang.StringgetStoredProcedureParameterPrefix()Pervasive uses ":" as prefix for procedure parameters.org.eclipse.persistence.internal.helper.DatabaseTablegetTempTableForTable(org.eclipse.persistence.internal.helper.DatabaseTable table)INTERNAL:protected voidinitializePlatformOperators()booleanisForUpdateCompatibleWithDistinct()INTERNAL: Indicates whether SELECT DISTINCT ...booleanisPervasive()Answers whether platform is PervasivevoidprintFieldIdentityClause(java.io.Writer writer)Append the receiver's field 'identity' constraint clause to a writer.voidprintFieldTypeSize(java.io.Writer writer, FieldDefinition field, org.eclipse.persistence.internal.databaseaccess.FieldTypeDefinition fieldType, boolean shouldPrintFieldIdentityClause)Taken from org.eclipse.persistence\foundation\org.eclipse.persistence.core\src\org\eclipse\persistence\platform\database\AccessPlatform.javabooleanrequiresProcedureBrackets()In CREATE PROCEDURE, Pervasive requires brackets after the procedure name, even if there are no arguments.booleanrequiresProcedureCallOuputToken()Pervasive requires the OUTPUT keyword for output parametersbooleanshouldPrintLockingClauseAfterWhereClause()Attempts to remove FOR UPDATE from queriesbooleanshouldPrintStoredProcedureArgumentNameInCall()INTERNAL: Pervasive SQL stored procedure calls do not require the argument name be printed in the call string e.g. call MyStoredProc(?)booleanshouldUseJDBCOuterJoinSyntax()JDBC defines an outer join syntax which many drivers do not support.ExpressionOperatorsingleArgumentSubstringOperator()Override the default SubstringSingleArg operator.booleansupportsDeleteOnCascade()Setting this to false (cf.booleansupportsGlobalTempTables()booleansupportsIdentity()Indicates whether the platform supports identity.booleansupportsLocalTempTables()INTERNAL:booleansupportsLockingQueriesWithMultipleTables()INTERNAL: Indicates whether locking clause could be applied to the query that has more than one tableprotected ExpressionOperatortoCharOperator()Cloned from MySQLPlatform.javaprotected ExpressionOperatortoDateOperator()Cloned from MySQLPlatform.javaprotected ExpressionOperatortoNumberOperator()-
Methods inherited from class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
addBatch, addStructConverter, allowBindingForSelectClause, allowsSizeInProcedureArguments, appendBoolean, appendByteArray, appendCalendar, appendDate, appendLiteralToCall, appendLiteralToCallWithBinding, appendNumber, appendParameter, appendParameterInternal, appendString, appendTime, appendTimestamp, autoCommit, beginTransaction, buildBatchCriteria, buildBatchCriteriaForComplexId, buildCallWithReturning, buildCreateIndex, buildCreateIndex, buildDropIndex, buildDropIndex, buildProcedureCallString, buildSequenceObjectAlterIncrementWriter, buildSequenceObjectCreationWriter, buildSequenceObjectDeletionWriter, canBatchWriteWithOptimisticLocking, canBuildCallWithReturning, checkTableExists, commitTransaction, computeMaxRowsForSQL, convertToDatabaseType, copyInto, createArray, createArray, createPlatformDefaultSequence, createStruct, createStruct, createStruct, dontBindUpdateAllQueryUsingTempTables, executeBatch, executeStoredProcedure, freeTemporaryObject, getAssignmentString, getBatchBeginString, getBatchDelimiterString, getBatchEndString, getBatchRowCountAssignString, getBatchRowCountDeclareString, getBatchRowCountReturnString, getBatchWritingMechanism, getCastSizeForVarcharParameter, getClassTypes, getConnection, getConnectionUserName, getConstraintDeletionString, getCreateDatabaseSchemaString, getCreateTempTableSqlBodyForTable, getCreateTempTableSqlSuffix, getCreateViewString, getCreationInOutputProcedureToken, getCreationOutputProcedureToken, getCursorCode, getCustomModifyValueForCall, getDefaultSequenceTableName, getDriverSupportsNVarChar, getDropCascadeString, getDropDatabaseSchemaString, getFieldTypeDefinition, getFieldTypes, getFunctionCallHeader, getIdentifierQuoteCharacter, getIndexNamePrefix, getJDBCOuterJoinString, getJDBCType, getJDBCType, getJDBCTypeForSetNull, getJdbcTypeName, getMaxBatchWritingSize, getMaxFieldNameSize, getMaxForeignKeyNameSize, getMaxIndexNameSize, getMaxUniqueKeyNameSize, getNoWaitString, getObjectFromResultSet, getOutputProcedureToken, getParameterValueFromDatabaseCall, getParameterValueFromDatabaseCall, getPartitioningCallback, getPingSQL, getProcedureArgument, getProcedureArgument, getProcedureAsString, getProcedureCallTail, getProcedureOptionList, getQualifiedName, getQualifiedSequenceTableName, getRefValue, getRefValue, getSelectForUpdateNoWaitString, getSelectForUpdateOfString, getSelectForUpdateWaitString, getSequenceCounterFieldName, getSequenceNameFieldName, getSequencePreallocationSize, getSequenceTableName, getStatementCacheSize, getStoredProcedureTerminationToken, getStringBindingSize, getStructConverters, getTableCreationSuffix, getTableExistsQuery, getTransactionIsolation, getTypeConverters, getUniqueConstraintDeletionString, getUseNationalCharacterVaryingTypeForString, getVPDClearIdentifierQuery, getVPDCreationFunctionString, getVPDCreationPolicyString, getVPDDeletionString, getVPDSetIdentifierQuery, hasPartitioningCallback, initialize, initializeConnectionData, isAlterSequenceObjectSupported, isCastRequired, isDynamicSQLRequiredForFunctions, isInformixOuterJoin, isJDBCExecuteCompliant, isLobCompatibleWithDistinct, isLockTimeoutException, isNullAllowedInSelectClause, isOutputAllowWithResultSet, isRowCountOutputParameterRequired, isXDBDocument, maximumNumericValues, minimumNumericValues, minimumTimeIncrement, prepareBatchStatement, printFieldNotNullClause, printFieldNullClause, printFieldTypeSize, printFieldUnique, printFieldUnique, printSQLSelectStatement, printStoredFunctionReturnKeyWord, printValuelist, printValuelist, registerOutputParameter, registerOutputParameter, registerOutputParameter, registerOutputParameter, requiresNamedPrimaryKeyConstraints, requiresProcedureCallBrackets, requiresTableInIndexDropDDL, requiresTypeNameToRegisterOutputParameter, requiresUniqueConstraintCreationOnTableCreate, retrieveFirstPrimaryKeyOrOne, rollbackTransaction, setBatchWritingMechanism, setCastSizeForVarcharParameter, setClassTypes, setCursorCode, setDriverName, setDriverSupportsNVarChar, setFieldTypes, setIsCastRequired, setMaxBatchWritingSize, setNullFromDatabaseField, setNullFromDatabaseField, setParameterValueInDatabaseCall, setParameterValueInDatabaseCall, setPartitioningCallback, setPingSQL, setPrintInnerJoinInWhereClause, setPrintOuterJoinInWhereClause, setSequenceCounterFieldName, setSequenceNameFieldName, setSequenceTableName, setShouldBindAllParameters, setShouldBindLiterals, setShouldBindPartialParameters, setShouldCacheAllStatements, setShouldCreateIndicesOnForeignKeys, setShouldForceBindAllParameters, setShouldForceFieldNamesToUpperCase, setShouldIgnoreCaseOnFieldComparisons, setShouldOptimizeDataConversion, setShouldTrimStrings, setShouldUseRownumFiltering, setStatementCacheSize, setStoredProcedureTerminationToken, setStringBindingSize, setSupportsAutoCommit, setTableCreationSuffix, setTransactionIsolation, setUseJDBCStoredProcedureSyntax, setUseNationalCharacterVaryingTypeForString, setUsesBatchWriting, setUsesByteArrayBinding, setUsesJDBCBatchWriting, setUsesNativeBatchWriting, setUsesNativeSQL, setUsesStreamsForBinding, setUsesStringBinding, shouldAlwaysUseTempStorageForModifyAll, shouldBindAllParameters, shouldBindLiterals, shouldBindPartialParameters, shouldCacheAllStatements, shouldCreateIndicesForPrimaryKeys, shouldCreateIndicesOnForeignKeys, shouldCreateIndicesOnUniqueKeys, shouldForceBindAllParameters, shouldForceFieldNamesToUpperCase, shouldIgnoreCaseOnFieldComparisons, shouldIgnoreException, shouldOptimizeDataConversion, shouldPrintAliasForUpdate, shouldPrintConstraintNameAfter, shouldPrintFieldIdentityClause, shouldPrintForUpdateClause, shouldPrintInnerJoinInWhereClause, shouldPrintInOutputTokenBeforeType, shouldPrintInputTokenAtStart, shouldPrintOuterJoinInWhereClause, shouldPrintOutputTokenAtStart, shouldPrintOutputTokenBeforeType, shouldPrintStoredProcedureVariablesAfterBeginString, shouldTempTableSpecifyPrimaryKeys, shouldTrimStrings, shouldUseCustomModifyForCall, shouldUseGetSetNString, shouldUseRownumFiltering, supportsANSIInnerJoinSyntax, supportsAutoCommit, supportsAutoConversionToNumericForArithmeticOperations, supportsConnectionUserName, supportsCountDistinctWithMultipleFields, supportsForeignKeyConstraints, supportsIndexes, supportsIndividualTableLocking, supportsNestingOuterJoins, supportsOrderByParameters, supportsOuterJoinsWithBrackets, supportsPrimaryKeyConstraint, supportsStoredFunctions, supportsTempTables, supportsUniqueColumns, supportsUniqueKeyConstraints, supportsVPD, supportsWaitForUpdate, usesBatchWriting, usesByteArrayBinding, usesJDBCBatchWriting, usesNativeBatchWriting, usesNativeSQL, usesSequenceTable, usesStreamsForBinding, usesStringBinding, wasFailureCommunicationBased, writeAddColumnClause, writeAutoAssignmentSetClause, writeAutoJoinWhereClause, writeCleanUpTempTableSql, writeCreateTempTableSql, writeDeleteFromTargetTableUsingTempTableSql, writeFields, writeFieldsAutoClause, writeFieldsList, writeInsertIntoTableSql, writeJoinWhereClause, writeLOB, writeParameterMarker, writeTableCreationSuffix, writeUpdateOriginalFromTempTableSql
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Methods inherited from class org.eclipse.persistence.internal.databaseaccess.DatasourcePlatform
addOperator, addSequence, addSequence, buildNativeCall, buildSelectQueryForIdentity, buildSelectQueryForSequenceObject, buildSelectQueryForSequenceObject, clone, convertObject, convertObject, createConnectionCustomizer, createExpressionFor, getConversionManager, getDataTypesConvertedFrom, getDataTypesConvertedTo, getDefaultNativeSequenceToTable, getDefaultSeqenceAtNextValue, getDefaultSequence, getDefaultSequenceToWrite, getDriverVersion, getEndDelimiter, getINClauseLimit, getOperator, getPlatformOperators, getSelectSequenceQuery, getSequence, getSequences, getSequencesToWrite, getStartDelimiter, getTableQualifier, getTimestampFromServer, getTimestampQuery, getUpdateSequenceQuery, hasDefaultSequence, initializeDefaultQueries, isAccess, isAttunity, isCloudscape, isDB2, isDB2Z, isDBase, isDerby, isFirebird, isH2, isHANA, isHSQL, isInformix, isMaxDB, isMySQL, isODBC, isOracle, isOracle23, isOracle9, isPointBase, isPostgreSQL, isSQLAnywhere, isSQLServer, isSybase, isSymfoware, isTimesTen, isTimesTen7, removeAllSequences, removeSequence, sequencesAfterCloneCleanup, setConversionManager, setDefaultNativeSequenceToTable, setDefaultSeqenceAtNextValue, setDefaultSequence, setEndDelimiter, setSelectSequenceNumberQuery, setSequencePreallocationSize, setSequences, setStartDelimiter, setSupportsReturnGeneratedKeys, setTableQualifier, setTimestampQuery, setUpdateSequenceQuery, shouldNativeSequenceUseTransaction, shouldPrepare, shouldSelectDistinctIncludeOrderBy, shouldSelectIncludeOrderBy, supportsNativeSequenceNumbers, supportsReturnGeneratedKeys, supportsSequenceObjects, toString, usesPlatformDefaultSequence
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Field Detail
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DEFAULT_CHAR_SIZE
public static final int DEFAULT_CHAR_SIZE
- See Also:
- Constant Field Values
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Method Detail
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buildClassTypes
protected java.util.Map<java.lang.String,java.lang.Class> buildClassTypes()
- Overrides:
buildClassTypesin classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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buildFieldTypes
protected java.util.Hashtable buildFieldTypes()
- Overrides:
buildFieldTypesin classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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getInOutputProcedureToken
public java.lang.String getInOutputProcedureToken()
Pervasive uses the INOUT keyword, as opposed to "IN OUT".- Overrides:
getInOutputProcedureTokenin classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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getInputProcedureToken
public java.lang.String getInputProcedureToken()
Pervasive uses IN prefix for INPUT parameters.- Overrides:
getInputProcedureTokenin classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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getProcedureArgumentString
public java.lang.String getProcedureArgumentString()
Pervasive uses ":" as prefix for procedure arguments.- Overrides:
getProcedureArgumentStringin classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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getProcedureBeginString
public java.lang.String getProcedureBeginString()
Pervasive requires BEGIN in a procedure statement.- Overrides:
getProcedureBeginStringin classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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requiresProcedureBrackets
public boolean requiresProcedureBrackets()
In CREATE PROCEDURE, Pervasive requires brackets after the procedure name, even if there are no arguments.- Overrides:
requiresProcedureBracketsin classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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getProcedureCallHeader
public java.lang.String getProcedureCallHeader()
Pervasive uses CALL or EXECUTE not CALL PROCEDURE or EXECUTE PROCEDURE- Overrides:
getProcedureCallHeaderin classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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getProcedureEndString
public java.lang.String getProcedureEndString()
Pervasive requires END in a procedure statement.- Overrides:
getProcedureEndStringin classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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getStoredProcedureParameterPrefix
public java.lang.String getStoredProcedureParameterPrefix()
Pervasive uses ":" as prefix for procedure parameters.- Overrides:
getStoredProcedureParameterPrefixin classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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requiresProcedureCallOuputToken
public boolean requiresProcedureCallOuputToken()
Pervasive requires the OUTPUT keyword for output parameters- Overrides:
requiresProcedureCallOuputTokenin classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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initializePlatformOperators
protected void initializePlatformOperators()
- Overrides:
initializePlatformOperatorsin classorg.eclipse.persistence.internal.databaseaccess.DatasourcePlatform
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shouldPrintStoredProcedureArgumentNameInCall
public boolean shouldPrintStoredProcedureArgumentNameInCall()
INTERNAL: Pervasive SQL stored procedure calls do not require the argument name be printed in the call string e.g. call MyStoredProc(?) instead of call MyStoredProc(myvariable = ?)- Overrides:
shouldPrintStoredProcedureArgumentNameInCallin classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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toNumberOperator
protected ExpressionOperator toNumberOperator()
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toDateOperator
protected ExpressionOperator toDateOperator()
Cloned from MySQLPlatform.java
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toCharOperator
protected ExpressionOperator toCharOperator()
Cloned from MySQLPlatform.java
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dateToStringOperator
protected ExpressionOperator dateToStringOperator()
Cloned from MySQLPlatform.java
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isPervasive
public boolean isPervasive()
Answers whether platform is Pervasive- Overrides:
isPervasivein classorg.eclipse.persistence.internal.databaseaccess.DatasourcePlatform
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shouldUseJDBCOuterJoinSyntax
public boolean shouldUseJDBCOuterJoinSyntax()
JDBC defines an outer join syntax which many drivers do not support. So we normally avoid it.- Overrides:
shouldUseJDBCOuterJoinSyntaxin classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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printFieldIdentityClause
public void printFieldIdentityClause(java.io.Writer writer) throws ValidationExceptionAppend the receiver's field 'identity' constraint clause to a writer. Taken from org.eclipse.persistence\foundation\org.eclipse.persistence.core\src\org\eclipse\persistence\platform\database\AccessPlatform.java- Overrides:
printFieldIdentityClausein classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform- Throws:
ValidationException
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singleArgumentSubstringOperator
public ExpressionOperator singleArgumentSubstringOperator()
Override the default SubstringSingleArg operator. Cloned from SybasePlatform.java
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supportsIdentity
public boolean supportsIdentity()
Indicates whether the platform supports identity.- Overrides:
supportsIdentityin classorg.eclipse.persistence.internal.databaseaccess.DatasourcePlatform
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supportsLocalTempTables
public boolean supportsLocalTempTables()
INTERNAL:- Overrides:
supportsLocalTempTablesin classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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supportsGlobalTempTables
public boolean supportsGlobalTempTables()
- Overrides:
supportsGlobalTempTablesin classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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getCreateTempTableSqlPrefix
protected java.lang.String getCreateTempTableSqlPrefix()
INTERNAL:- Overrides:
getCreateTempTableSqlPrefixin 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:- Overrides:
getTempTableForTablein classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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printFieldTypeSize
public void printFieldTypeSize(java.io.Writer writer, FieldDefinition field, org.eclipse.persistence.internal.databaseaccess.FieldTypeDefinition fieldType, boolean shouldPrintFieldIdentityClause) throws java.io.IOExceptionTaken from org.eclipse.persistence\foundation\org.eclipse.persistence.core\src\org\eclipse\persistence\platform\database\AccessPlatform.java- Overrides:
printFieldTypeSizein classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform- Throws:
java.io.IOException
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buildSelectQueryForIdentity
public ValueReadQuery buildSelectQueryForIdentity()
INTERNAL: Build the identity query for native sequencing. Taken verbatim from org.eclipse.persistence\foundation\org.eclipse.persistence.core\src\org\eclipse\persistence\platform\database\SQLServerPlatform.java- Overrides:
buildSelectQueryForIdentityin classorg.eclipse.persistence.internal.databaseaccess.DatasourcePlatform
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getSelectForUpdateString
public java.lang.String getSelectForUpdateString()
Temporary workaround to avoid joined queries with FOR UPDATE in them- Overrides:
getSelectForUpdateStringin classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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isForUpdateCompatibleWithDistinct
public boolean isForUpdateCompatibleWithDistinct()
INTERNAL: Indicates whether SELECT DISTINCT ... FOR UPDATE is allowed by the platform (Oracle doesn't allow this).- Overrides:
isForUpdateCompatibleWithDistinctin classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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supportsDeleteOnCascade
public boolean supportsDeleteOnCascade()
Setting this to false (cf. Sybase) to work around problem that unspecified default delete rule is RESTRICT, even when not allowed due to self-referencing table.- Overrides:
supportsDeleteOnCascadein classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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shouldPrintLockingClauseAfterWhereClause
public boolean shouldPrintLockingClauseAfterWhereClause()
Attempts to remove FOR UPDATE from queries- Overrides:
shouldPrintLockingClauseAfterWhereClausein classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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supportsLockingQueriesWithMultipleTables
public boolean supportsLockingQueriesWithMultipleTables()
INTERNAL: Indicates whether locking clause could be applied to the query that has more than one table- Overrides:
supportsLockingQueriesWithMultipleTablesin classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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