org.eclipse.persistence.platform.database
Class H2Platform

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.HSQLPlatform
                  org.eclipse.persistence.platform.database.H2Platform

All Implemented Interfaces:

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

public class H2Platform
extends HSQLPlatform

See Also:

Serialized Form

Field Summary

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, isCastRequired, maxBatchWritingSize, pingSQL, printOuterJoinInWhereClause, shouldBindAllParameters, shouldCacheAllStatements, shouldForceFieldNamesToUpperCase, shouldIgnoreCaseOnFieldComparisons, shouldOptimizeDataConversion, shouldTrimStrings, statementCacheSize, stringBindingSize, structConverters, supportsAutoCommit, transactionIsolation, typeConverters, Types_NCLOB, 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, startDelimiter, tableQualifier, timestampQuery

Constructor Summary

H2Platform()

Method Summary

protected java.util.Hashtable	buildFieldTypes()
ValueReadQuery	buildSelectQueryForIdentity()
ValueReadQuery	buildSelectQueryForSequenceObject(java.lang.String seqName, java.lang.Integer size)
int	computeMaxRowsForSQL(int firstResultIndex, int maxResults) INTERNAL: Use the JDBC maxResults and firstResultIndex setting to compute a value to use when limiting the results of a query in SQL.
protected Sequence	createPlatformDefaultSequence()
protected java.lang.String	getCreateTempTableSqlPrefix()
ValueReadQuery	getTimestampQuery()
protected void	initializePlatformOperators()
boolean	isAlterSequenceObjectSupported()
boolean	isH2()
boolean	isHSQL()
static ExpressionOperator	monthsBetweenOperator() INTERNAL: Use MONTH function for MONTH_BETWEEN.
void	printFieldIdentityClause(java.io.Writer writer)
void	printSQLSelectStatement(org.eclipse.persistence.internal.databaseaccess.DatabaseCall call, org.eclipse.persistence.internal.expressions.ExpressionSQLPrinter printer, org.eclipse.persistence.internal.expressions.SQLSelectStatement statement) Print the pagination SQL using H2 syntax " LIMIT OFFSET ".
boolean	shouldBindLiterals() INTERNAL H2 has some issue with un-typed parameters, this allows a workaround to these issues using literals.
boolean	supportsForeignKeyConstraints() HSQL 1.6.1 does not support the ALTER TABLE method of create foreign key constraints
boolean	supportsGlobalTempTables()
boolean	supportsIdentity()
boolean	supportsLocalTempTables()
boolean	supportsNativeSequenceNumbers()
boolean	supportsSequenceObjects()
boolean	supportsStoredFunctions()
static ExpressionOperator	toNumberOperator() INTERNAL: Use CONVERT function for toNumber.
void	writeUpdateOriginalFromTempTableSql(java.io.Writer writer, org.eclipse.persistence.internal.helper.DatabaseTable table, java.util.Collection pkFields, java.util.Collection assignedFields) H2 does not allow using () in the update if only one field.

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

addBatch, addStructConverter, allowsSizeInProcedureArguments, appendBoolean, appendByteArray, appendCalendar, appendDate, appendLiteralToCall, appendLiteralToCallWithBinding, appendNumber, appendParameter, appendParameterInternal, appendString, appendTime, appendTimestamp, autoCommit, beginTransaction, buildCallWithReturning, buildClassTypes, buildCreateIndex, buildDropIndex, buildProcedureCallString, buildSelectQueryForIdentity, buildSelectQueryForSequenceObject, buildSequenceObjectAlterIncrementWriter, buildSequenceObjectCreationWriter, buildSequenceObjectDeletionWriter, canBuildCallWithReturning, commitTransaction, convertToDatabaseType, copyInto, createArray, createArray, createStruct, createStruct, dontBindUpdateAllQueryUsingTempTables, executeBatch, executeStoredProcedure, getAssignmentString, getBatchBeginString, getBatchDelimiterString, getBatchEndString, getCastSizeForVarcharParameter, getClassTypes, getConnection, getConstraintDeletionString, getCreateTempTableSqlBodyForTable, getCreateTempTableSqlSuffix, getCreateViewString, getCreationInOutputProcedureToken, getCreationOutputProcedureToken, getCursorCode, getCustomModifyValueForCall, getFieldTypeDefinition, getFieldTypes, getFunctionCallHeader, getIdentifierQuoteCharacter, getInOutputProcedureToken, getInputProcedureToken, getJDBCOuterJoinString, getJDBCType, getJDBCType, getJdbcTypeName, getMaxBatchWritingSize, getMaxFieldNameSize, getMaxForeignKeyNameSize, getMaxIndexNameSize, getMaxUniqueKeyNameSize, getNoWaitString, getObjectFromResultSet, getOutputProcedureToken, getPingSQL, getProcedureArgumentSetter, getProcedureArgumentString, getProcedureAsString, getProcedureBeginString, getProcedureCallHeader, getProcedureCallTail, getProcedureEndString, getQualifiedName, getQualifiedSequenceTableName, getRefValue, getRefValue, getSelectForUpdateNoWaitString, getSelectForUpdateOfString, getSelectForUpdateString, getSelectForUpdateWaitString, getSequenceCounterFieldName, getSequenceNameFieldName, getSequencePreallocationSize, getSequenceTableName, getStatementCacheSize, getStoredProcedureParameterPrefix, getStoredProcedureTerminationToken, getStringBindingSize, getStructConverters, getTempTableForTable, getTransactionIsolation, getTypeConverters, isCastRequired, isForUpdateCompatibleWithDistinct, isInformixOuterJoin, isLockTimeoutException, isNullAllowedInSelectClause, isXDBDocument, maximumNumericValues, minimumNumericValues, prepareBatchStatement, printFieldNotNullClause, printFieldNullClause, printFieldTypeSize, printFieldTypeSize, printFieldUnique, printFieldUnique, printValuelist, printValuelist, processResultSet, registerOutputParameter, requiresNamedPrimaryKeyConstraints, requiresProcedureBrackets, requiresProcedureCallBrackets, requiresProcedureCallOuputToken, requiresTypeNameToRegisterOutputParameter, requiresUniqueConstraintCreationOnTableCreate, rollbackTransaction, setCastSizeForVarcharParameter, setClassTypes, setCursorCode, setFieldTypes, setIsCastRequired, setMaxBatchWritingSize, setParameterValueInDatabaseCall, setPingSQL, setPrintOuterJoinInWhereClause, setSequenceCounterFieldName, setSequenceNameFieldName, setSequenceTableName, setShouldBindAllParameters, setShouldCacheAllStatements, setShouldForceFieldNamesToUpperCase, setShouldIgnoreCaseOnFieldComparisons, setShouldOptimizeDataConversion, setShouldTrimStrings, setShouldUseRownumFiltering, setStatementCacheSize, setStringBindingSize, setSupportsAutoCommit, setTransactionIsolation, setUsesBatchWriting, setUsesByteArrayBinding, setUsesJDBCBatchWriting, setUsesNativeBatchWriting, setUsesNativeSQL, setUsesStreamsForBinding, setUsesStringBinding, shouldAlwaysUseTempStorageForModifyAll, shouldBindAllParameters, shouldCacheAllStatements, shouldCreateIndicesForPrimaryKeys, shouldCreateIndicesOnUniqueKeys, shouldForceFieldNamesToUpperCase, shouldIgnoreCaseOnFieldComparisons, shouldIgnoreException, shouldNativeSequenceUseTransaction, shouldOptimizeDataConversion, shouldPrintAliasForUpdate, shouldPrintConstraintNameAfter, shouldPrintFieldIdentityClause, shouldPrintInOutputTokenBeforeType, shouldPrintInputTokenAtStart, shouldPrintLockingClauseAfterWhereClause, shouldPrintOuterJoinInWhereClause, shouldPrintOutputTokenAtStart, shouldPrintOutputTokenBeforeType, shouldPrintStoredProcedureArgumentNameInCall, shouldPrintStoredProcedureVariablesAfterBeginString, shouldTempTableSpecifyPrimaryKeys, shouldTrimStrings, shouldUseCustomModifyForCall, shouldUseJDBCOuterJoinSyntax, shouldUseRownumFiltering, supportsAutoCommit, supportsIndividualTableLocking, supportsLockingQueriesWithMultipleTables, supportsPrimaryKeyConstraint, supportsTempTables, supportsUniqueKeyConstraints, usesBatchWriting, usesByteArrayBinding, usesJDBCBatchWriting, usesNativeBatchWriting, usesNativeSQL, usesSequenceTable, usesStreamsForBinding, usesStringBinding, wasFailureCommunicationBased, writeAutoAssignmentSetClause, writeAutoJoinWhereClause, writeCleanUpTempTableSql, writeCreateTempTableSql, writeDeleteFromTargetTableUsingTempTableSql, writeFields, writeFieldsAutoClause, writeFieldsList, writeInsertIntoTableSql, writeJoinWhereClause, writeLOB, writeParameterMarker

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

addOperator, addSequence, clone, convertObject, createConnectionCustomizer, createSequences, getConversionManager, getDataTypesConvertedFrom, getDataTypesConvertedTo, getDefaultSequence, getDefaultSequenceToWrite, getEndDelimiter, getOperator, getPlatformOperators, getSelectSequenceQuery, getSequence, getSequences, getSequencesToWrite, getStartDelimiter, getTableQualifier, getTimestampFromServer, getUpdateSequenceQuery, hasDefaultSequence, isAccess, isAttunity, isCloudscape, isDB2, isDBase, isDerby, isInformix, isMySQL, isODBC, isOracle, isOracle9, isPointBase, isPostgreSQL, isSQLAnywhere, isSQLServer, isSybase, 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

Constructor Detail

H2Platform

public H2Platform()

Method Detail

isHSQL

public final boolean isHSQL()

Specified by:

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

Overrides:

isHSQL in class HSQLPlatform

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)

Print the pagination SQL using H2 syntax " LIMIT OFFSET ".

Overrides:

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

computeMaxRowsForSQL

public int computeMaxRowsForSQL(int firstResultIndex,
                                int maxResults)

INTERNAL: Use the JDBC maxResults and firstResultIndex setting to compute a value to use when limiting the results of a query in SQL. These limits tend to be used in two ways. 1. MaxRows is the index of the last row to be returned (like JDBC maxResults) 2. MaxRows is the number of rows to be returned H2 uses case #2 and therefore the maxResults has to be altered based on the firstResultIndex.

Overrides:

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

buildFieldTypes

protected java.util.Hashtable buildFieldTypes()

Overrides:

buildFieldTypes in class HSQLPlatform

isAlterSequenceObjectSupported

public boolean isAlterSequenceObjectSupported()

Overrides:

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

buildSelectQueryForSequenceObject

public ValueReadQuery buildSelectQueryForSequenceObject(java.lang.String seqName,
                                                        java.lang.Integer size)

Overrides:

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

createPlatformDefaultSequence

protected Sequence createPlatformDefaultSequence()

Overrides:

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

supportsIdentity

public boolean supportsIdentity()

Overrides:

supportsIdentity in class HSQLPlatform

supportsSequenceObjects

public boolean supportsSequenceObjects()

Overrides:

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

buildSelectQueryForIdentity

public ValueReadQuery buildSelectQueryForIdentity()

Overrides:

buildSelectQueryForIdentity in class HSQLPlatform

printFieldIdentityClause

public void printFieldIdentityClause(java.io.Writer writer)
                              throws ValidationException

Overrides:

printFieldIdentityClause in class HSQLPlatform

Throws:

ValidationException

supportsForeignKeyConstraints

public boolean supportsForeignKeyConstraints()

Description copied from class: HSQLPlatform

HSQL 1.6.1 does not support the ALTER TABLE method of create foreign key constraints

Overrides:

supportsForeignKeyConstraints in class HSQLPlatform

supportsLocalTempTables

public boolean supportsLocalTempTables()

Overrides:

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

supportsGlobalTempTables

public boolean supportsGlobalTempTables()

Overrides:

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

getCreateTempTableSqlPrefix

protected java.lang.String getCreateTempTableSqlPrefix()

Overrides:

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

writeUpdateOriginalFromTempTableSql

public void writeUpdateOriginalFromTempTableSql(java.io.Writer writer,
                                                org.eclipse.persistence.internal.helper.DatabaseTable table,
                                                java.util.Collection pkFields,
                                                java.util.Collection assignedFields)
                                         throws java.io.IOException

H2 does not allow using () in the update if only one field.

Overrides:

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

Throws:

java.io.IOException

supportsNativeSequenceNumbers

public boolean supportsNativeSequenceNumbers()

Overrides:

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

supportsStoredFunctions

public boolean supportsStoredFunctions()

Overrides:

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

getTimestampQuery

public ValueReadQuery getTimestampQuery()

Specified by:

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

Overrides:

getTimestampQuery in class org.eclipse.persistence.internal.databaseaccess.DatasourcePlatform

initializePlatformOperators

protected void initializePlatformOperators()

Overrides:

initializePlatformOperators in class org.eclipse.persistence.internal.databaseaccess.DatasourcePlatform

toNumberOperator

public static ExpressionOperator toNumberOperator()

INTERNAL: Use CONVERT function for toNumber.

monthsBetweenOperator

public static ExpressionOperator monthsBetweenOperator()

INTERNAL: Use MONTH function for MONTH_BETWEEN.

shouldBindLiterals

public boolean shouldBindLiterals()

INTERNAL H2 has some issue with un-typed parameters, this allows a workaround to these issues using literals.

Overrides:

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

isH2

public boolean isH2()

Specified by:

isH2 in interface org.eclipse.persistence.internal.databaseaccess.Platform

Overrides:

isH2 in class org.eclipse.persistence.internal.databaseaccess.DatasourcePlatform