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org.eclipse.persistence.platform.database.oracle
Class Oracle8Platform

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
org.eclipse.persistence.platform.database.oracle.Oracle8Platform

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, org.eclipse.persistence.internal.databaseaccess.Platform

Direct Known Subclasses:

Oracle9Platform

public class Oracle8Platform

extends OraclePlatform

Purpose: Supports certain new Oracle 8 data types, and usage of certain Oracle JDBC specific APIs.

Supports Oracle thin JDBC driver LOB >4k binding workaround.

Creates BLOB and CLOB type for byte[] and char[] for table creation.

Supports object-relational data-type creation.

See Also:

Serialized Form

Field Summary

protected int	lobValueLimits The LOB value limits when the Locator is required for the writing
protected boolean	usesLocatorForLOBWrite Locator is required for Oracle thin driver to write LOB value exceeds the limits

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

supportsIdentity, vpdClearIdentifierQuery, vpdSetIdentifierQuery

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

DEFAULT_VARCHAR_SIZE

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

castSizeForVarcharParameter, classTypes, cursorCode, DEFAULT_MAX_BATCH_WRITING_SIZE, DEFAULT_PARAMETERIZED_MAX_BATCH_WRITING_SIZE, fieldTypes, IS_VALID_TIMEOUT, isCastRequired, maxBatchWritingSize, partitioningCallback, pingSQL, printOuterJoinInWhereClause, shouldBindAllParameters, shouldBindLiterals, shouldCacheAllStatements, shouldForceFieldNamesToUpperCase, shouldIgnoreCaseOnFieldComparisons, shouldOptimizeDataConversion, shouldTrimStrings, statementCacheSize, stringBindingSize, structConverters, supportsAutoCommit, tableCreationSuffix, transactionIsolation, typeConverters, Types_NCLOB, Types_SQLXML, useRownumFiltering, usesBatchWriting, usesByteArrayBinding, usesJDBCBatchWriting, usesNativeBatchWriting, usesNativeSQL, usesStreamsForBinding, usesStringBinding

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

conversionManager, dataTypesConvertedFromAClass, dataTypesConvertedToAClass, defaultSequence, endDelimiter, platformOperators, sequences, sequencesLock, startDelimiter, tableQualifier, timestampQuery

Constructor Summary

Oracle8Platform()

Method Summary

protected java.util.Hashtable	buildFieldTypes() INTERNAL:
void	copyInto(org.eclipse.persistence.internal.databaseaccess.Platform platform) INTERNAL: Allow for conversion from the Oralce type to the Java type.
java.sql.Array	createArray(java.lang.String elementDataTypeName, java.lang.Object[] elements, java.sql.Connection connection) INTERNAL: Platforms that support java.sql.Array may override this method.
java.sql.Struct	createStruct(java.lang.String structTypeName, java.lang.Object[] attributes, java.sql.Connection connection) INTERNAL: Platforms that support java.sql.Struct may override this method.
void	freeTemporaryObject(java.lang.Object value) INTERNAL: Used by Oracle platforms during reading of ResultSet to free temporary LOBs.
java.sql.Connection	getConnection(org.eclipse.persistence.internal.sessions.AbstractSession session, java.sql.Connection connection) INTERNAL: This method is used to unwrap the oracle connection wrapped by the application server.
java.lang.Object	getCustomModifyValueForCall(Call call, java.lang.Object value, org.eclipse.persistence.internal.helper.DatabaseField field, boolean shouldBind) INTERNAL Used by SQLCall.translate(..)
int	getLobValueLimits() PUBLIC: Return the BLOB/CLOB value limits on thin driver.
java.lang.Object	getRefValue(java.sql.Ref ref, java.sql.Connection connection) INTERNAL: Overrides DatabasePlatform method.
protected boolean	isBlob(java.lang.Class type) INTERNAL: Used in writeLOB method only to identify a BLOB
protected boolean	isClob(java.lang.Class type) INTERNAL: Used in writeLOB method only to identify a CLOB
boolean	isNativeConnectionRequiredForLobLocator() INTERNAL: Indicates whether app. server should unwrap connection to use lob locator.
protected boolean	lobValueExceedsLimit(java.lang.Object value) INTERNAL: Return if the LOB value size is larger than the limit, i.e. 4k.
void	setLobValueLimits(int lobValueLimits) PUBLIC: Set the BLOB/CLOB value limits on thin driver.
void	setShouldUseLocatorForLOBWrite(boolean usesLocatorForLOBWrite) PUBLIC: Set if the locator is required for the LOB write.
boolean	shouldUseCustomModifyForCall(org.eclipse.persistence.internal.helper.DatabaseField field) INTERNAL Used by SQLCall.appendModify(..)
boolean	shouldUseLocatorForLOBWrite() PUBLIC: Return if the locator is required for the LOB write.
void	writeLOB(org.eclipse.persistence.internal.helper.DatabaseField field, java.lang.Object value, java.sql.ResultSet resultSet, org.eclipse.persistence.internal.sessions.AbstractSession session) INTERNAL: Write LOB value - only on Oracle8 and up

Methods inherited from class org.eclipse.persistence.platform.database.OraclePlatform

allowsSizeInProcedureArguments, appendByteArray, appendCalendar, appendDate, appendTime, appendTimestamp, atan2Operator, buildCallWithReturning, buildSelectQueryForIdentity, buildSelectQueryForSequenceObject, canBuildCallWithReturning, canUnwrapOracleConnection, clearOracleConnectionCache, currentDateOperator, currentTimeOperator, getAssignmentString, getBatchBeginString, getBatchEndString, getDeclareBeginString, getMaxFieldNameSize, getNativeTableInfo, getObjectFromResultSet, getProcedureArgumentSetter, getProcedureCallHeader, getProcedureCallTail, getSelectForUpdateString, getSelectForUpdateWaitString, getStoredProcedureParameterPrefix, getStoredProcedureTerminationToken, getSystemChangeNumberQuery, getTimestampQuery, getVPDClearIdentifierQuery, getVPDCreationFunctionString, getVPDCreationPolicyString, getVPDDeletionString, getVPDSetIdentifierQuery, initializePlatformOperators, isAlterSequenceObjectSupported, isForUpdateCompatibleWithDistinct, isLockTimeoutException, isOracle, logOperator, maximumNumericValues, minimumNumericValues, operatorLocate, operatorLocate2, operatorOuterJoin, printFieldNullClause, printSQLSelectStatement, serverTimestampString, setSupportsIdentity, shouldUseJDBCOuterJoinSyntax, supportsAutoConversionToNumericForArithmeticOperations, supportsIdentity, supportsSelectForUpdateNoWait, supportsSequenceObjects, supportsStoredFunctions, supportsVPD, todayOperator, unwrapOracleConnection, wasFailureCommunicationBased

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

addBatch, addStructConverter, appendBoolean, appendLiteralToCall, appendLiteralToCallWithBinding, appendNumber, appendParameter, appendParameterInternal, appendString, autoCommit, beginTransaction, buildBatchCriteria, buildBatchCriteriaForComplexId, buildClassTypes, buildCreateIndex, buildCreateIndex, buildDropIndex, buildDropIndex, buildProcedureCallString, buildSelectQueryForIdentity, buildSelectQueryForSequenceObject, buildSequenceObjectAlterIncrementWriter, buildSequenceObjectCreationWriter, buildSequenceObjectDeletionWriter, canBatchWriteWithOptimisticLocking, commitTransaction, computeMaxRowsForSQL, convertToDatabaseType, createArray, createPlatformDefaultSequence, createStruct, dontBindUpdateAllQueryUsingTempTables, executeBatch, executeStoredProcedure, getBatchDelimiterString, getCastSizeForVarcharParameter, getClassTypes, getConstraintDeletionString, getCreateTempTableSqlBodyForTable, getCreateTempTableSqlPrefix, getCreateTempTableSqlSuffix, getCreateViewString, getCreationInOutputProcedureToken, getCreationOutputProcedureToken, getCursorCode, getDefaultSequenceTableName, getFieldTypeDefinition, getFieldTypes, getFunctionCallHeader, getIdentifierQuoteCharacter, getIndexNamePrefix, getInOutputProcedureToken, getInputProcedureToken, getJDBCOuterJoinString, getJDBCType, getJDBCType, getJdbcTypeName, getMaxBatchWritingSize, getMaxForeignKeyNameSize, getMaxIndexNameSize, getMaxUniqueKeyNameSize, getNoWaitString, getOutputProcedureToken, getPartitioningCallback, getPingSQL, getProcedureArgumentString, getProcedureAsString, getProcedureBeginString, getProcedureEndString, getQualifiedName, getQualifiedSequenceTableName, getRefValue, getSelectForUpdateNoWaitString, getSelectForUpdateOfString, getSequenceCounterFieldName, getSequenceNameFieldName, getSequencePreallocationSize, getSequenceTableName, getStatementCacheSize, getStringBindingSize, getStructConverters, getTableCreationSuffix, getTempTableForTable, getTransactionIsolation, getTypeConverters, hasPartitioningCallback, initialize, initializeConnectionData, isCastRequired, isDynamicSQLRequiredForFunctions, isInformixOuterJoin, isNullAllowedInSelectClause, isXDBDocument, minimumTimeIncrement, prepareBatchStatement, printFieldIdentityClause, printFieldNotNullClause, printFieldTypeSize, printFieldTypeSize, printFieldUnique, printFieldUnique, printStoredFunctionReturnKeyWord, printValuelist, printValuelist, registerOutputParameter, requiresNamedPrimaryKeyConstraints, requiresProcedureBrackets, requiresProcedureCallBrackets, requiresProcedureCallOuputToken, requiresTableInIndexDropDDL, requiresTypeNameToRegisterOutputParameter, requiresUniqueConstraintCreationOnTableCreate, retrieveFirstPrimaryKeyOrOne, rollbackTransaction, setCastSizeForVarcharParameter, setClassTypes, setCursorCode, setFieldTypes, setIsCastRequired, setMaxBatchWritingSize, setNullFromDatabaseField, setParameterValueInDatabaseCall, setPartitioningCallback, setPingSQL, setPrintOuterJoinInWhereClause, setSequenceCounterFieldName, setSequenceNameFieldName, setSequenceTableName, setShouldBindAllParameters, setShouldBindLiterals, setShouldCacheAllStatements, setShouldForceFieldNamesToUpperCase, setShouldIgnoreCaseOnFieldComparisons, setShouldOptimizeDataConversion, setShouldTrimStrings, setShouldUseRownumFiltering, setStatementCacheSize, setStringBindingSize, setSupportsAutoCommit, setTableCreationSuffix, setTransactionIsolation, setUsesBatchWriting, setUsesByteArrayBinding, setUsesJDBCBatchWriting, setUsesNativeBatchWriting, setUsesNativeSQL, setUsesStreamsForBinding, setUsesStringBinding, shouldAlwaysUseTempStorageForModifyAll, shouldBindAllParameters, shouldBindLiterals, shouldCacheAllStatements, shouldCreateIndicesForPrimaryKeys, shouldCreateIndicesOnUniqueKeys, shouldForceFieldNamesToUpperCase, shouldIgnoreCaseOnFieldComparisons, shouldIgnoreException, shouldNativeSequenceUseTransaction, shouldOptimizeDataConversion, shouldPrintAliasForUpdate, shouldPrintConstraintNameAfter, shouldPrintFieldIdentityClause, shouldPrintInOutputTokenBeforeType, shouldPrintInputTokenAtStart, shouldPrintLockingClauseAfterWhereClause, shouldPrintOuterJoinInWhereClause, shouldPrintOutputTokenAtStart, shouldPrintOutputTokenBeforeType, shouldPrintStoredProcedureArgumentNameInCall, shouldPrintStoredProcedureVariablesAfterBeginString, shouldTempTableSpecifyPrimaryKeys, shouldTrimStrings, shouldUseRownumFiltering, supportsANSIInnerJoinSyntax, supportsAutoCommit, supportsForeignKeyConstraints, supportsGlobalTempTables, supportsIndexes, supportsIndividualTableLocking, supportsLocalTempTables, supportsLockingQueriesWithMultipleTables, supportsNativeSequenceNumbers, supportsNestingOuterJoins, supportsOuterJoinsWithBrackets, supportsPrimaryKeyConstraint, supportsTempTables, supportsUniqueColumns, supportsUniqueKeyConstraints, usesBatchWriting, usesByteArrayBinding, usesJDBCBatchWriting, usesNativeBatchWriting, usesNativeSQL, usesSequenceTable, usesStreamsForBinding, usesStringBinding, writeAutoAssignmentSetClause, writeAutoJoinWhereClause, writeCleanUpTempTableSql, writeCreateTempTableSql, writeDeleteFromTargetTableUsingTempTableSql, writeFields, writeFieldsAutoClause, writeFieldsList, writeInsertIntoTableSql, writeJoinWhereClause, writeParameterMarker, writeTableCreationSuffix, writeUpdateOriginalFromTempTableSql

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

addOperator, addSequence, addSequence, clone, convertObject, createConnectionCustomizer, getConversionManager, getDataTypesConvertedFrom, getDataTypesConvertedTo, getDefaultSequence, getDefaultSequenceToWrite, getEndDelimiter, getOperator, getPlatformOperators, getSelectSequenceQuery, getSequence, getSequences, getSequencesToWrite, getStartDelimiter, getTableQualifier, getTimestampFromServer, getUpdateSequenceQuery, hasDefaultSequence, isAccess, isAttunity, isCloudscape, isDB2, isDBase, isDerby, isFirebird, isH2, isHSQL, isInformix, isMaxDB, isMySQL, isODBC, isOracle9, isPointBase, isPostgreSQL, isSQLAnywhere, isSQLServer, isSybase, isSymfoware, isTimesTen, isTimesTen7, removeAllSequences, removeSequence, sequencesAfterCloneCleanup, setConversionManager, setDefaultSequence, setEndDelimiter, setSelectSequenceNumberQuery, setSequencePreallocationSize, setSequences, setStartDelimiter, setTableQualifier, setTimestampQuery, setUpdateSequenceQuery, toString, usesPlatformDefaultSequence

Methods inherited from class java.lang.Object

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

Field Detail

usesLocatorForLOBWrite

protected boolean usesLocatorForLOBWrite

Locator is required for Oracle thin driver to write LOB value exceeds the limits

lobValueLimits

protected int lobValueLimits

The LOB value limits when the Locator is required for the writing

Constructor Detail

Oracle8Platform

public Oracle8Platform()

Method Detail

buildFieldTypes

protected java.util.Hashtable buildFieldTypes()

INTERNAL:

Overrides:

buildFieldTypes in class OraclePlatform

copyInto

public void copyInto(org.eclipse.persistence.internal.databaseaccess.Platform platform)

INTERNAL: Allow for conversion from the Oralce type to the Java type.

Specified by:

copyInto in interface org.eclipse.persistence.internal.databaseaccess.Platform

Overrides:

copyInto in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform

lobValueExceedsLimit

protected boolean lobValueExceedsLimit(java.lang.Object value)

INTERNAL: Return if the LOB value size is larger than the limit, i.e. 4k.

getConnection

public java.sql.Connection getConnection(org.eclipse.persistence.internal.sessions.AbstractSession session,
                                         java.sql.Connection connection)

INTERNAL: This method is used to unwrap the oracle connection wrapped by the application server. TopLink needs this unwrapped connection for certain Oracle Specific support. (ie TIMESTAMPTZ, LOB) This is added as a workaround for bug 4565190

Overrides:

getConnection in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform

getCustomModifyValueForCall

public java.lang.Object getCustomModifyValueForCall(Call call,
                                                    java.lang.Object value,
                                                    org.eclipse.persistence.internal.helper.DatabaseField field,
                                                    boolean shouldBind)

INTERNAL Used by SQLCall.translate(..) Typically there is no field translation (and this is default implementation). However on different platforms (Oracle) there are cases such that the values for binding and appending may be different (BLOB, CLOB). In these special cases the method returns a wrapper object which knows whether it should be bound or appended and knows how to do that.

Specified by:

getCustomModifyValueForCall in interface org.eclipse.persistence.internal.databaseaccess.Platform

Overrides:

getCustomModifyValueForCall in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform

shouldUseCustomModifyForCall

public boolean shouldUseCustomModifyForCall(org.eclipse.persistence.internal.helper.DatabaseField field)

INTERNAL Used by SQLCall.appendModify(..) If the field should be passed to customModifyInDatabaseCall, retun true, otherwise false. Methods shouldCustomModifyInDatabaseCall and customModifyInDatabaseCall should be kept in sync: shouldCustomModifyInDatabaseCall should return true if and only if the field is handled by customModifyInDatabaseCall.

Specified by:

shouldUseCustomModifyForCall in interface org.eclipse.persistence.internal.databaseaccess.Platform

Overrides:

shouldUseCustomModifyForCall in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform

writeLOB

public void writeLOB(org.eclipse.persistence.internal.helper.DatabaseField field,
                     java.lang.Object value,
                     java.sql.ResultSet resultSet,
                     org.eclipse.persistence.internal.sessions.AbstractSession session)
              throws java.sql.SQLException

INTERNAL: Write LOB value - only on Oracle8 and up

Overrides:

writeLOB in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform

Throws:

java.sql.SQLException

isBlob

protected boolean isBlob(java.lang.Class type)

INTERNAL: Used in writeLOB method only to identify a BLOB

isClob

protected boolean isClob(java.lang.Class type)

INTERNAL: Used in writeLOB method only to identify a CLOB

isNativeConnectionRequiredForLobLocator

public boolean isNativeConnectionRequiredForLobLocator()

INTERNAL: Indicates whether app. server should unwrap connection to use lob locator.

Overrides:

isNativeConnectionRequiredForLobLocator in class OraclePlatform

setShouldUseLocatorForLOBWrite

public void setShouldUseLocatorForLOBWrite(boolean usesLocatorForLOBWrite)

PUBLIC: Set if the locator is required for the LOB write. The default is true. For Oracle thin driver, the locator is recommended for large size ( >4k for Oracle8, >5.9K for Oracle9) BLOB/CLOB value write.

shouldUseLocatorForLOBWrite

public boolean shouldUseLocatorForLOBWrite()

PUBLIC: Return if the locator is required for the LOB write. The default is true. For Oracle thin driver, the locator is recommended for large size ( >4k for Oracle8, >5.9K for Oracle9) BLOB/CLOB value write.

getLobValueLimits

public int getLobValueLimits()

PUBLIC: Return the BLOB/CLOB value limits on thin driver. The default value is 0. If usesLocatorForLOBWrite is true, locator will be used in case the lob's size is larger than lobValueLimit.

setLobValueLimits

public void setLobValueLimits(int lobValueLimits)

PUBLIC: Set the BLOB/CLOB value limits on thin driver. The default value is 0. If usesLocatorForLOBWrite is true, locator will be used in case the lob's size is larger than lobValueLimit.

createArray

public java.sql.Array createArray(java.lang.String elementDataTypeName,
                                  java.lang.Object[] elements,
                                  java.sql.Connection connection)
                           throws java.sql.SQLException

INTERNAL: Platforms that support java.sql.Array may override this method.

Overrides:

createArray in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform

Returns:

Array

Throws:

java.sql.SQLException

createStruct

public java.sql.Struct createStruct(java.lang.String structTypeName,
                                    java.lang.Object[] attributes,
                                    java.sql.Connection connection)
                             throws java.sql.SQLException

INTERNAL: Platforms that support java.sql.Struct may override this method.

Overrides:

createStruct in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform

Returns:

Struct

Throws:

java.sql.SQLException

getRefValue

public java.lang.Object getRefValue(java.sql.Ref ref,
                                    java.sql.Connection connection)
                             throws java.sql.SQLException

INTERNAL: Overrides DatabasePlatform method.

Overrides:

getRefValue in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform

Returns:

String

Throws:

java.sql.SQLException

freeTemporaryObject

public void freeTemporaryObject(java.lang.Object value)
                         throws java.sql.SQLException

INTERNAL: Used by Oracle platforms during reading of ResultSet to free temporary LOBs.

Overrides:

freeTemporaryObject in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform

Throws:

java.sql.SQLException

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