OraclePlatform (Oracle Fusion Middleware Java API Reference for Oracle TopLink)

java.lang.Object
- org.eclipse.persistence.internal.databaseaccess.DatasourcePlatform
- - org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - - org.eclipse.persistence.platform.database.DatabasePlatform
    - - org.eclipse.persistence.platform.database.OraclePlatform

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:

Oracle8Platform
```
public class OraclePlatform
extends DatabasePlatform
```
Purpose: Provides Oracle specific behavior.

Responsibilities:
- Native SQL for byte[], Date, Time, & Timestamp.
- Native sequencing named sequences.
- Native SQL/ROWNUM support for MaxRows and FirstResult filtering.
Since:

TOPLink/Java 1.0

See Also:

Serialized Form

Field Summary
- Fields inherited from class org.eclipse.persistence.platform.database.DatabasePlatform
  DEFAULT_VARCHAR_SIZE
- Fields inherited from class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  DEFAULT_MAX_BATCH_WRITING_SIZE, DEFAULT_PARAMETERIZED_MAX_BATCH_WRITING_SIZE, IS_VALID_TIMEOUT, Types_NCLOB, Types_SQLXML

Constructor Summary

Constructors
Constructor and Description

OraclePlatform()

Constructors
Constructor and Description
`OraclePlatform()`

Method Summary

Methods
Modifier and Type	Method and Description
`boolean`	`allowsSizeInProcedureArguments()`
`ExpressionOperator`	`atan2Operator()` INTERNAL: Build operator.
`org.eclipse.persistence.internal.databaseaccess.DatabaseCall`	`buildCallWithReturning(SQLCall sqlCall, java.util.Vector returnFields)` INTERNAL: Returns null unless the platform supports call with returning
`ValueReadQuery`	`buildSelectQueryForIdentity(java.lang.String qualifiedSeqName, java.lang.Integer size)` INTERNAL: Though Oracle doesn't support identity it could be imitated, see comment to setSupportsIdentity method.
`ValueReadQuery`	`buildSelectQueryForSequenceObject(java.lang.String qualifiedSeqName, java.lang.Integer size)` INTERNAL: Produce a DataReadQuery which updates(!)
`boolean`	`canBuildCallWithReturning()` INTERNAL: Indicates whether the platform can build call with returning.
`boolean`	`canUnwrapOracleConnection()` INTERNAL: Indicates whether this Oracle platform can unwrap Oracle connection.
`void`	`clearOracleConnectionCache(java.sql.Connection conn)` INTERNAL: Clears both implicit and explicit caches of OracleConnection on Oracle9Platform, noop here.
`static ExpressionOperator`	`exceptOperator()` INTERNAL: Create the EXCEPT operator, MINUS in Oracle.
`java.lang.String`	`getAssignmentString()` INTERNAL: Used for stored function calls.
`java.lang.String`	`getBatchBeginString()` Used for batch writing and sp defs.
`java.lang.String`	`getBatchEndString()` Used for batch writing and sp defs.
`java.lang.String`	`getBatchRowCountAssignString()` Used for batch writing for row count return.
`java.lang.String`	`getBatchRowCountDeclareString()` Used for batch writing for row count return.
`java.lang.String`	`getBatchRowCountReturnString()` Used for batch writing for row count return.
`java.lang.String`	`getDeclareBeginString()` INTERNAL: DECLARE stanza header for Anonymous PL/SQL block
`java.lang.String`	`getDropCascadeString()` Allows DROP TABLE to cascade dropping of any dependent constraints if the database supports this option.
`java.lang.String`	`getDropDatabaseSchemaString(java.lang.String schema)` Return the drop schema definition.
`int`	`getMaxFieldNameSize()` INTERNAL: returns the maximum number of characters that can be used in a field name on this platform.
`java.util.Vector`	`getNativeTableInfo(java.lang.String table, java.lang.String creator, org.eclipse.persistence.internal.sessions.AbstractSession session)` Return the catalog information through using the native SQL catalog selects.
`java.lang.Object`	`getObjectFromResultSet(java.sql.ResultSet resultSet, int columnNumber, int type, org.eclipse.persistence.internal.sessions.AbstractSession session)` INTERNAL: Get a timestamp value from a result set.
`java.lang.String`	`getProcedureArgumentSetter()` Used for sp calls.
`java.lang.String`	`getProcedureCallHeader()` Used for sp calls.
`java.lang.String`	`getProcedureCallTail()` Used for sp calls.
`java.lang.String`	`getSelectForUpdateString()`
`java.lang.String`	`getSelectForUpdateWaitString(java.lang.Integer waitTimeout)`
`java.lang.String`	`getStoredProcedureParameterPrefix()`
`java.lang.String`	`getStoredProcedureTerminationToken()`
`ValueReadQuery`	`getSystemChangeNumberQuery()` PUBLIC: The query to select the current system change number from Oracle.
`ValueReadQuery`	`getTimestampQuery()` PUBLIC: This method returns the query to select the timestamp from the server for Oracle.
`DatabaseQuery`	`getVPDClearIdentifierQuery(java.lang.String vpdIdentifier)` INTERNAL: Return an Oracle defined VPD clear identifier query.
`java.lang.String`	`getVPDCreationFunctionString(java.lang.String tableName, java.lang.String tenantFieldName)` INTERNAL: Return an Oracle defined VPD identifier function.
`java.lang.String`	`getVPDCreationPolicyString(java.lang.String tableName, org.eclipse.persistence.internal.sessions.AbstractSession session)` INTERNAL: Return an Oracle defined VPD identifier policy.
`java.lang.String`	`getVPDDeletionString(java.lang.String tableName, org.eclipse.persistence.internal.sessions.AbstractSession session)` INTERNAL: Return an Oracle defined VPD identifier policy deletion.
`DatabaseQuery`	`getVPDSetIdentifierQuery(java.lang.String vpdIdentifier)` INTERNAL: Return an Oracle defined VPD set identifier query.
`boolean`	`isAlterSequenceObjectSupported()` INTERNAL: Override this method if the platform supports sequence objects and it's possible to alter sequence object's increment in the database.
`boolean`	`isForUpdateCompatibleWithDistinct()` INTERNAL: Indicates whether SELECT DISTINCT ...
`boolean`	`isLobCompatibleWithDistinct()` INTERNAL: Indicates whether SELECT DISTINCT lob FROM ...
`boolean`	`isLockTimeoutException(DatabaseException e)` Return true if the given exception occurred as a result of a lock time out exception (WAIT clause).
`boolean`	`isNativeConnectionRequiredForLobLocator()` INTERNAL: Used by derived platforms (Oracle8Platform and higher) to indicate whether app. server should unwrap connection to use lob locator.
`boolean`	`isOracle()`
`boolean`	`isRowCountOutputParameterRequired()` Oracle does not return the row count from PLSQL anon blocks, so an output parameter is required for this.
`java.util.Hashtable`	`maximumNumericValues()` Builds a table of maximum numeric values keyed on java class.
`java.util.Hashtable`	`minimumNumericValues()` Builds a table of minimum numeric values keyed on java class.
`void`	`printFieldNullClause(java.io.Writer writer)` INTERNAL: Append the receiver's field 'NULL' 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.
`static ExpressionOperator`	`regexpOperator()` INTERNAL: Create the REGEXP_LIKE operator.
`java.lang.String`	`serverTimestampString()` Return the current date and time from the server.
`void`	`setSupportsIdentity(boolean supportsIdentity)` ADVANCED: Oracle db doesn't support identity.
`boolean`	`shouldPrintStoredProcedureArgumentNameInCall()` INTERNAL: Should the variable name of a stored procedure call be printed as part of the procedure call e.g.
`boolean`	`shouldUseJDBCOuterJoinSyntax()` JDBC defines and outer join syntax, many drivers do not support this.
`boolean`	`supportsAutoConversionToNumericForArithmeticOperations()` Some db allow VARCHAR db field to be used in arithmetic operations automatically converting them to numeric: UPDATE OL_PHONE SET PHONE_ORDER_VARCHAR = (PHONE_ORDER_VARCHAR + 1) WHERE ...
`boolean`	`supportsIdentity()` INTERNAL: Indicates whether the platform supports identity.
`boolean`	`supportsSelectForUpdateNoWait()` Returns true if the database supports SQL syntax not to wait on a SELECT..FOR UPADTE (i.e.
`boolean`	`supportsSequenceObjects()` INTERNAL: Indicates whether the platform supports sequence objects.
`boolean`	`supportsStoredFunctions()` INTERNAL: Return if database stored functions are supported.
`boolean`	`supportsVPD()` Oracle db supports VPD.
`java.sql.Connection`	`unwrapOracleConnection(java.sql.Connection connection)` INTERNAL: If can unwrap returns unwrapped Oracle connection, otherwise original connection.
`boolean`	`useJDBCStoredProcedureSyntax()` Return true if JDBC syntax should be used for stored procedure calls.
`boolean`	`wasFailureCommunicationBased(java.sql.SQLException exception, java.sql.Connection connection, org.eclipse.persistence.internal.sessions.AbstractSession sessionForProfile)` INTERNAL: A call to this method will perform a platform based check on the connection and exception error code to determine if the connection is still valid or if a communication error has occurred.

Methods inherited from class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
addBatch, addStructConverter, appendLiteralToCall, appendParameter, appendParameterInternal, autoCommit, beginTransaction, buildBatchCriteria, buildBatchCriteriaForComplexId, buildCreateIndex, buildCreateIndex, buildDropIndex, buildDropIndex, buildProcedureCallString, buildSequenceObjectAlterIncrementWriter, buildSequenceObjectCreationWriter, buildSequenceObjectDeletionWriter, canBatchWriteWithOptimisticLocking, commitTransaction, computeMaxRowsForSQL, convertToDatabaseType, copyInto, createArray, createArray, createStruct, createStruct, dontBindUpdateAllQueryUsingTempTables, executeBatch, executeStoredProcedure, freeTemporaryObject, getBatchDelimiterString, getBatchWritingMechanism, getCastSizeForVarcharParameter, getClassTypes, getConnection, getConstraintDeletionString, getCreateDatabaseSchemaString, getCreateViewString, getCreationInOutputProcedureToken, getCreationOutputProcedureToken, getCursorCode, getCustomModifyValueForCall, getDefaultSequenceTableName, getFieldTypeDefinition, getFieldTypes, getFunctionCallHeader, getIdentifierQuoteCharacter, getIndexNamePrefix, getInOutputProcedureToken, getInputProcedureToken, getJDBCOuterJoinString, getJDBCType, getJDBCType, getJDBCTypeForSetNull, getJdbcTypeName, getMaxBatchWritingSize, getMaxForeignKeyNameSize, getMaxIndexNameSize, getMaxUniqueKeyNameSize, getNoWaitString, getOutputProcedureToken, getPartitioningCallback, getPingSQL, getProcedureArgumentString, getProcedureAsString, getProcedureBeginString, getProcedureEndString, getQualifiedName, getQualifiedSequenceTableName, getRefValue, getRefValue, getSelectForUpdateNoWaitString, getSelectForUpdateOfString, getSequenceCounterFieldName, getSequenceNameFieldName, getSequencePreallocationSize, getSequenceTableName, getStatementCacheSize, getStringBindingSize, getStructConverters, getTableCreationSuffix, getTempTableForTable, getTransactionIsolation, getTypeConverters, getUniqueConstraintDeletionString, hasPartitioningCallback, initialize, initializeConnectionData, isCastRequired, isDynamicSQLRequiredForFunctions, isInformixOuterJoin, isJDBCExecuteCompliant, isNullAllowedInSelectClause, isOutputAllowWithResultSet, isXDBDocument, minimumTimeIncrement, prepareBatchStatement, printFieldIdentityClause, printFieldNotNullClause, printFieldTypeSize, printFieldUnique, printStoredFunctionReturnKeyWord, printValuelist, printValuelist, registerOutputParameter, requiresNamedPrimaryKeyConstraints, requiresProcedureBrackets, requiresProcedureCallBrackets, requiresProcedureCallOuputToken, requiresTableInIndexDropDDL, requiresTypeNameToRegisterOutputParameter, requiresUniqueConstraintCreationOnTableCreate, retrieveFirstPrimaryKeyOrOne, rollbackTransaction, setBatchWritingMechanism, setCastSizeForVarcharParameter, setCursorCode, setDriverName, setIsCastRequired, setMaxBatchWritingSize, setParameterValueInDatabaseCall, setPartitioningCallback, setPingSQL, setPrintInnerJoinInWhereClause, setPrintOuterJoinInWhereClause, setSequenceCounterFieldName, setSequenceNameFieldName, setSequenceTableName, setShouldBindAllParameters, setShouldBindLiterals, setShouldCacheAllStatements, setShouldCreateIndicesOnForeignKeys, setShouldForceFieldNamesToUpperCase, setShouldIgnoreCaseOnFieldComparisons, setShouldOptimizeDataConversion, setShouldTrimStrings, setShouldUseRownumFiltering, setStatementCacheSize, setStringBindingSize, setSupportsAutoCommit, setTableCreationSuffix, setTransactionIsolation, setUseJDBCStoredProcedureSyntax, setUsesBatchWriting, setUsesByteArrayBinding, setUsesJDBCBatchWriting, setUsesNativeBatchWriting, setUsesNativeSQL, setUsesStreamsForBinding, setUsesStringBinding, shouldAlwaysUseTempStorageForModifyAll, shouldBindAllParameters, shouldBindLiterals, shouldCacheAllStatements, shouldCreateIndicesForPrimaryKeys, shouldCreateIndicesOnForeignKeys, shouldCreateIndicesOnUniqueKeys, shouldForceFieldNamesToUpperCase, shouldIgnoreCaseOnFieldComparisons, shouldIgnoreException, shouldOptimizeDataConversion, shouldPrintAliasForUpdate, shouldPrintConstraintNameAfter, shouldPrintFieldIdentityClause, shouldPrintInnerJoinInWhereClause, shouldPrintInOutputTokenBeforeType, shouldPrintInputTokenAtStart, shouldPrintLockingClauseAfterWhereClause, shouldPrintOuterJoinInWhereClause, shouldPrintOutputTokenAtStart, shouldPrintOutputTokenBeforeType, shouldPrintStoredProcedureVariablesAfterBeginString, shouldTrimStrings, shouldUseCustomModifyForCall, shouldUseRownumFiltering, supportsANSIInnerJoinSyntax, supportsAutoCommit, supportsCountDistinctWithMultipleFields, supportsDeleteOnCascade, supportsForeignKeyConstraints, supportsGlobalTempTables, supportsIndexes, supportsIndividualTableLocking, supportsLocalTempTables, supportsLockingQueriesWithMultipleTables, supportsNestingOuterJoins, supportsOuterJoinsWithBrackets, supportsPrimaryKeyConstraint, supportsTempTables, supportsUniqueColumns, supportsUniqueKeyConstraints, usesBatchWriting, usesByteArrayBinding, usesJDBCBatchWriting, usesNativeBatchWriting, usesNativeSQL, usesSequenceTable, usesStreamsForBinding, usesStringBinding, writeAddColumnClause, writeCleanUpTempTableSql, writeCreateTempTableSql, writeDeleteFromTargetTableUsingTempTableSql, writeInsertIntoTableSql, writeLOB, writeParameterMarker, writeTableCreationSuffix, writeUpdateOriginalFromTempTableSql

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, isDB2, isDBase, isDerby, isFirebird, isH2, isHANA, isHSQL, isInformix, isMaxDB, isMySQL, isODBC, 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

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

- Constructor Detail
  - OraclePlatform
```
public OraclePlatform()
```
- Method Detail
  - allowsSizeInProcedureArguments
```
public boolean allowsSizeInProcedureArguments()
```
    Overrides:
    
    allowsSizeInProcedureArguments in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - atan2Operator
```
public ExpressionOperator atan2Operator()
```
    INTERNAL: Build operator.
  - buildCallWithReturning
```
public org.eclipse.persistence.internal.databaseaccess.DatabaseCall buildCallWithReturning(SQLCall sqlCall,
                                                                                  java.util.Vector returnFields)
```
    INTERNAL: Returns null unless the platform supports call with returning
    
    Overrides:
    
    buildCallWithReturning in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - canBuildCallWithReturning
```
public boolean canBuildCallWithReturning()
```
    INTERNAL: Indicates whether the platform can build call with returning. In case this method returns true, buildCallWithReturning method may be called.
    
    Overrides:
    
    canBuildCallWithReturning in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - clearOracleConnectionCache
```
public void clearOracleConnectionCache(java.sql.Connection conn)
```
    INTERNAL: Clears both implicit and explicit caches of OracleConnection on Oracle9Platform, noop here.
  - getAssignmentString
```
public java.lang.String getAssignmentString()
```
    INTERNAL: Used for stored function calls.
    
    Overrides:
    
    getAssignmentString in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - getDeclareBeginString
```
public java.lang.String getDeclareBeginString()
```
    INTERNAL: DECLARE stanza header for Anonymous PL/SQL block
  - getBatchBeginString
```
public java.lang.String getBatchBeginString()
```
    Used for batch writing and sp defs.
    
    Overrides:
    
    getBatchBeginString in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - getBatchEndString
```
public java.lang.String getBatchEndString()
```
    Used for batch writing and sp defs.
    
    Overrides:
    
    getBatchEndString in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - getBatchRowCountDeclareString
```
public java.lang.String getBatchRowCountDeclareString()
```
    Used for batch writing for row count return.
    
    Overrides:
    
    getBatchRowCountDeclareString in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - isRowCountOutputParameterRequired
```
public boolean isRowCountOutputParameterRequired()
```
    Oracle does not return the row count from PLSQL anon blocks, so an output parameter is required for this.
    
    Overrides:
    
    isRowCountOutputParameterRequired in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - getBatchRowCountReturnString
```
public java.lang.String getBatchRowCountReturnString()
```
    Used for batch writing for row count return.
    
    Overrides:
    
    getBatchRowCountReturnString in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - getDropDatabaseSchemaString
```
public java.lang.String getDropDatabaseSchemaString(java.lang.String schema)
```
    Return the drop schema definition. Subclasses should override as needed.
    
    Overrides:
    
    getDropDatabaseSchemaString in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - getBatchRowCountAssignString
```
public java.lang.String getBatchRowCountAssignString()
```
    Used for batch writing for row count return.
    
    Overrides:
    
    getBatchRowCountAssignString in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - 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 class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - getNativeTableInfo
```
public java.util.Vector getNativeTableInfo(java.lang.String table,
                                  java.lang.String creator,
                                  org.eclipse.persistence.internal.sessions.AbstractSession session)
```
    Return the catalog information through using the native SQL catalog selects. This is required because many JDBC driver do not support meta-data. Willcards can be passed as arguments.
  - getProcedureArgumentSetter
```
public java.lang.String getProcedureArgumentSetter()
```
    Used for sp calls.
    
    Overrides:
    
    getProcedureArgumentSetter in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - getProcedureCallHeader
```
public java.lang.String getProcedureCallHeader()
```
    Used for sp calls.
    
    Overrides:
    
    getProcedureCallHeader in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - getProcedureCallTail
```
public java.lang.String getProcedureCallTail()
```
    Used for sp calls.
    
    Overrides:
    
    getProcedureCallTail in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - getDropCascadeString
```
public java.lang.String getDropCascadeString()
```
    Allows DROP TABLE to cascade dropping of any dependent constraints if the database supports this option.
    
    Overrides:
    
    getDropCascadeString in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - getSelectForUpdateString
```
public java.lang.String getSelectForUpdateString()
```
    Overrides:
    
    getSelectForUpdateString in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - getSelectForUpdateWaitString
```
public java.lang.String getSelectForUpdateWaitString(java.lang.Integer waitTimeout)
```
    Overrides:
    
    getSelectForUpdateWaitString in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - getStoredProcedureParameterPrefix
```
public java.lang.String getStoredProcedureParameterPrefix()
```
    Overrides:
    
    getStoredProcedureParameterPrefix in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - getStoredProcedureTerminationToken
```
public java.lang.String getStoredProcedureTerminationToken()
```
    Overrides:
    
    getStoredProcedureTerminationToken in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - getSystemChangeNumberQuery
```
public ValueReadQuery getSystemChangeNumberQuery()
```
    PUBLIC: The query to select the current system change number from Oracle. In order to execute this query a database administrator may need to grant execute permission on pl/sql package DBMS_FLASHBACK.
  - getTimestampQuery
```
public ValueReadQuery getTimestampQuery()
```
    PUBLIC: This method returns the query to select the timestamp from the server for Oracle.
    
    Specified by:
    
    getTimestampQuery in interface org.eclipse.persistence.internal.databaseaccess.Platform
    
    Overrides:
    
    getTimestampQuery in class org.eclipse.persistence.internal.databaseaccess.DatasourcePlatform
  - getVPDClearIdentifierQuery
```
public DatabaseQuery getVPDClearIdentifierQuery(java.lang.String vpdIdentifier)
```
    INTERNAL: Return an Oracle defined VPD clear identifier query.
    
    Overrides:
    
    getVPDClearIdentifierQuery in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - getVPDCreationFunctionString
```
public java.lang.String getVPDCreationFunctionString(java.lang.String tableName,
                                            java.lang.String tenantFieldName)
```
    INTERNAL: Return an Oracle defined VPD identifier function. Used for DDL generation.
    
    Overrides:
    
    getVPDCreationFunctionString in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - getVPDCreationPolicyString
```
public java.lang.String getVPDCreationPolicyString(java.lang.String tableName,
                                          org.eclipse.persistence.internal.sessions.AbstractSession session)
```
    INTERNAL: Return an Oracle defined VPD identifier policy. Used for DDL generation.
    
    Overrides:
    
    getVPDCreationPolicyString in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - getVPDDeletionString
```
public java.lang.String getVPDDeletionString(java.lang.String tableName,
                                    org.eclipse.persistence.internal.sessions.AbstractSession session)
```
    INTERNAL: Return an Oracle defined VPD identifier policy deletion. Used for DDL generation.
    
    Overrides:
    
    getVPDDeletionString in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - getVPDSetIdentifierQuery
```
public DatabaseQuery getVPDSetIdentifierQuery(java.lang.String vpdIdentifier)
```
    INTERNAL: Return an Oracle defined VPD set identifier query.
    
    Overrides:
    
    getVPDSetIdentifierQuery in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - getObjectFromResultSet
```
public java.lang.Object getObjectFromResultSet(java.sql.ResultSet resultSet,
                                      int columnNumber,
                                      int type,
                                      org.eclipse.persistence.internal.sessions.AbstractSession session)
                                        throws java.sql.SQLException
```
    INTERNAL: Get a timestamp value from a result set. Overrides the default behavior to specifically return a timestamp. Added to overcome an issue with the oracle 9.0.1.4 JDBC driver.
    
    Overrides:
    
    getObjectFromResultSet in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
    
    Throws:
    
    java.sql.SQLException
  - exceptOperator
```
public static ExpressionOperator exceptOperator()
```
    INTERNAL: Create the EXCEPT operator, MINUS in Oracle.
  - regexpOperator
```
public static ExpressionOperator regexpOperator()
```
    INTERNAL: Create the REGEXP_LIKE operator.
  - isNativeConnectionRequiredForLobLocator
```
public boolean isNativeConnectionRequiredForLobLocator()
```
    INTERNAL: Used by derived platforms (Oracle8Platform and higher) to indicate whether app. server should unwrap connection to use lob locator.
  - isOracle
```
public boolean isOracle()
```
    Specified by:
    
    isOracle in interface org.eclipse.persistence.internal.databaseaccess.Platform
    
    Overrides:
    
    isOracle in class org.eclipse.persistence.internal.databaseaccess.DatasourcePlatform
  - maximumNumericValues
```
public java.util.Hashtable maximumNumericValues()
```
    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 class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - minimumNumericValues
```
public java.util.Hashtable minimumNumericValues()
```
    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 class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - buildSelectQueryForSequenceObject
```
public ValueReadQuery buildSelectQueryForSequenceObject(java.lang.String qualifiedSeqName,
                                               java.lang.Integer size)
```
    INTERNAL: Produce a DataReadQuery which updates(!) the sequence number in the db and returns it. Currently implemented on Oracle only.
    
    Overrides:
    
    buildSelectQueryForSequenceObject in class org.eclipse.persistence.internal.databaseaccess.DatasourcePlatform
    
    Parameters:
    
    qualifiedSeqName - known by Oracle to be a defined sequence
  - buildSelectQueryForIdentity
```
public ValueReadQuery buildSelectQueryForIdentity(java.lang.String qualifiedSeqName,
                                         java.lang.Integer size)
```
    INTERNAL: Though Oracle doesn't support identity it could be imitated, see comment to setSupportsIdentity method.
    
    Overrides:
    
    buildSelectQueryForIdentity in class org.eclipse.persistence.internal.databaseaccess.DatasourcePlatform
    
    Parameters:
    
    qualifiedSeqName - known by Oracle to be a defined sequence
  - printFieldNullClause
```
public void printFieldNullClause(java.io.Writer writer)
                          throws ValidationException
```
    INTERNAL: Append the receiver's field 'NULL' constraint clause to a writer.
    
    Overrides:
    
    printFieldNullClause in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
    
    Throws:
    
    ValidationException
  - serverTimestampString
```
public java.lang.String serverTimestampString()
```
    Return the current date and time from the server.
  - shouldPrintStoredProcedureArgumentNameInCall
```
public boolean shouldPrintStoredProcedureArgumentNameInCall()
```
    INTERNAL: Should the variable name of a stored procedure call be printed as part of the procedure call e.g. EXECUTE PROCEDURE MyStoredProc(myvariable = ?)
    
    Overrides:
    
    shouldPrintStoredProcedureArgumentNameInCall in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - shouldUseJDBCOuterJoinSyntax
```
public boolean shouldUseJDBCOuterJoinSyntax()
```
    JDBC defines and outer join syntax, many drivers do not support this. So we normally avoid it.
    
    Overrides:
    
    shouldUseJDBCOuterJoinSyntax in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - supportsAutoConversionToNumericForArithmeticOperations
```
public boolean supportsAutoConversionToNumericForArithmeticOperations()
```
    Some db allow VARCHAR db field to be used in arithmetic operations automatically converting them to numeric: UPDATE OL_PHONE SET PHONE_ORDER_VARCHAR = (PHONE_ORDER_VARCHAR + 1) WHERE ... SELECT ... WHERE ... t0.MANAGED_ORDER_VARCHAR BETWEEN 1 AND 4 ...
    
    Overrides:
    
    supportsAutoConversionToNumericForArithmeticOperations in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - supportsSequenceObjects
```
public boolean supportsSequenceObjects()
```
    INTERNAL: Indicates whether the platform supports sequence objects. This method is to be used *ONLY* by sequencing classes
    
    Overrides:
    
    supportsSequenceObjects in class org.eclipse.persistence.internal.databaseaccess.DatasourcePlatform
  - supportsIdentity
```
public boolean supportsIdentity()
```
    INTERNAL: Indicates whether the platform supports identity. This method is to be used *ONLY* by sequencing classes
    
    Overrides:
    
    supportsIdentity in class org.eclipse.persistence.internal.databaseaccess.DatasourcePlatform
  - setSupportsIdentity
```
public void setSupportsIdentity(boolean supportsIdentity)
```
    ADVANCED: Oracle db doesn't support identity. However it's possible to get identity-like behavior using sequence in an insert trigger - that's the only case when supportsIdentity should be set to true: in this case all the sequences that have shouldAcquireValueAfterInsert set to true will keep this setting (it would've been reversed in case identity is not supported). Note that with supportsIdentity==true attempt to create tables that have identity fields will fail - Oracle doesn't support identity. Therefore if there's table creation reqiured it should be done with supportsIdentity==false, then set the flag to true and reset sequencing (or logout and login the session).
  - supportsStoredFunctions
```
public boolean supportsStoredFunctions()
```
    INTERNAL: Return if database stored functions are supported.
    
    Overrides:
    
    supportsStoredFunctions in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - supportsVPD
```
public boolean supportsVPD()
```
    Oracle db supports VPD.
    
    Overrides:
    
    supportsVPD in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - supportsSelectForUpdateNoWait
```
public boolean supportsSelectForUpdateNoWait()
```
    Returns true if the database supports SQL syntax not to wait on a SELECT..FOR UPADTE (i.e. In Oracle adding NOWAIT to the end will accomplish this)
  - canUnwrapOracleConnection
```
public boolean canUnwrapOracleConnection()
```
    INTERNAL: Indicates whether this Oracle platform can unwrap Oracle connection.
  - unwrapOracleConnection
```
public java.sql.Connection unwrapOracleConnection(java.sql.Connection connection)
```
    INTERNAL: If can unwrap returns unwrapped Oracle connection, otherwise original connection.
  - useJDBCStoredProcedureSyntax
```
public boolean useJDBCStoredProcedureSyntax()
```
    Return true if JDBC syntax should be used for stored procedure calls.
  - 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 Oracle's ROWNUM to filter values if shouldUseRownumFiltering is true.
    
    Overrides:
    
    printSQLSelectStatement in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - isAlterSequenceObjectSupported
```
public boolean isAlterSequenceObjectSupported()
```
    INTERNAL: Override this method if the platform supports sequence objects and it's possible to alter sequence object's increment in the database.
    
    Overrides:
    
    isAlterSequenceObjectSupported in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - isForUpdateCompatibleWithDistinct
```
public boolean isForUpdateCompatibleWithDistinct()
```
    INTERNAL: Indicates whether SELECT DISTINCT ... FOR UPDATE is allowed by the platform (Oracle doesn't allow this).
    
    Overrides:
    
    isForUpdateCompatibleWithDistinct in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - isLobCompatibleWithDistinct
```
public boolean isLobCompatibleWithDistinct()
```
    INTERNAL: Indicates whether SELECT DISTINCT lob FROM ... (where lob is BLOB or CLOB) is allowed by the platform (Oracle doesn't allow this).
    
    Overrides:
    
    isLobCompatibleWithDistinct in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - isLockTimeoutException
```
public boolean isLockTimeoutException(DatabaseException e)
```
    Return true if the given exception occurred as a result of a lock time out exception (WAIT clause).
    
    Overrides:
    
    isLockTimeoutException in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - wasFailureCommunicationBased
```
public boolean wasFailureCommunicationBased(java.sql.SQLException exception,
                                   java.sql.Connection connection,
                                   org.eclipse.persistence.internal.sessions.AbstractSession sessionForProfile)
```
    INTERNAL: A call to this method will perform a platform based check on the connection and exception error code to determine if the connection is still valid or if a communication error has occurred. If a communication error has occurred then the query may be retried. If this platform is unable to determine if the error was communication based it will return false forcing the error to be thrown to the user.
    
    Overrides:
    
    wasFailureCommunicationBased in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform

Class OraclePlatform

Field Summary

Fields inherited from class org.eclipse.persistence.platform.database.DatabasePlatform

Fields inherited from class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform

Constructor Summary

Method Summary

Methods inherited from class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform

Methods inherited from class org.eclipse.persistence.internal.databaseaccess.DatasourcePlatform

Methods inherited from class java.lang.Object

Constructor Detail

OraclePlatform

Method Detail

allowsSizeInProcedureArguments

atan2Operator

buildCallWithReturning

canBuildCallWithReturning

clearOracleConnectionCache

getAssignmentString

getDeclareBeginString

getBatchBeginString

getBatchEndString

getBatchRowCountDeclareString

isRowCountOutputParameterRequired

getBatchRowCountReturnString

getDropDatabaseSchemaString

getBatchRowCountAssignString

getMaxFieldNameSize

getNativeTableInfo

getProcedureArgumentSetter

getProcedureCallHeader

getProcedureCallTail

getDropCascadeString

getSelectForUpdateString

getSelectForUpdateWaitString

getStoredProcedureParameterPrefix

getStoredProcedureTerminationToken

getSystemChangeNumberQuery

getTimestampQuery

getVPDClearIdentifierQuery

getVPDCreationFunctionString

getVPDCreationPolicyString

getVPDDeletionString

getVPDSetIdentifierQuery

getObjectFromResultSet

exceptOperator

regexpOperator

isNativeConnectionRequiredForLobLocator

isOracle

maximumNumericValues

minimumNumericValues

buildSelectQueryForSequenceObject

buildSelectQueryForIdentity

printFieldNullClause

serverTimestampString

shouldPrintStoredProcedureArgumentNameInCall

shouldUseJDBCOuterJoinSyntax

supportsAutoConversionToNumericForArithmeticOperations

supportsSequenceObjects

supportsIdentity

setSupportsIdentity

supportsStoredFunctions

supportsVPD

supportsSelectForUpdateNoWait

canUnwrapOracleConnection

unwrapOracleConnection

useJDBCStoredProcedureSyntax

printSQLSelectStatement

isAlterSequenceObjectSupported

isForUpdateCompatibleWithDistinct

isLobCompatibleWithDistinct

isLockTimeoutException

wasFailureCommunicationBased