Class PostgreSQLPlatform
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.PostgreSQLPlatform
- All Implemented Interfaces:
Serializable
,Cloneable
,org.eclipse.persistence.internal.core.databaseaccess.CorePlatform<org.eclipse.persistence.internal.helper.ConversionManager>
,org.eclipse.persistence.internal.databaseaccess.Platform
Purpose: Provides Postgres specific behavior.
Responsibilities:
- Native SQL for Date, Time, & Timestamp.
- Native sequencing.
- Mapping of class types to database types for the schema framework.
- Pessimistic locking.
- Platform specific operators.
- LIMIT/OFFSET query syntax for select statements.
- See Also:
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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
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, useJDBCStoredProcedureSyntax, useNationalCharacterVarying, useRownumFiltering, usesBatchWriting, usesByteArrayBinding, usesJDBCBatchWriting, usesNativeBatchWriting, usesNativeSQL, usesStreamsForBinding, usesStringBinding
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
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Method Summary
Modifier and TypeMethodDescriptionprotected void
appendBoolean
(Boolean bool, Writer writer) Appends a Boolean value.org.eclipse.persistence.internal.databaseaccess.DatabaseCall
buildCallWithReturning
(SQLCall sqlCall, Vector returnFields) INTERNAL: Uses the returning clause on Postgres.protected Hashtable
Return the mapping of class types to database types for the schema framework.buildProcedureCallString
(StoredProcedureCall call, org.eclipse.persistence.internal.sessions.AbstractSession session, org.eclipse.persistence.internal.sessions.AbstractRecord row) INTERNAL: Used for sp calls.INTERNAL: Returns query used to read back the value generated by Identity.buildSelectQueryForSequenceObject
(String qualifiedSeqName, Integer size) INTERNAL: Returns query used to read value generated by sequence object (like Oracle sequence).boolean
INTERNAL: Postgres has a returning clause.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.INTERNAL Used for stored function calls.protected String
INTERNAL:protected String
INTERNAL:Allows DROP TABLE to cascade dropping of any dependent constraints if the database supports this option.This method is used to print the output parameter token when stored procedures are calledint
getJDBCType
(Class javaType) Return the JDBC type for the Java type.int
INTERNAL: returns the maximum number of characters that can be used in a field name on this platform.INTERNAL: Used for sp calls.INTERNAL: Used for sp calls.INTERNAL: This method returns the query to select the timestamp from the server for Postgres.protected void
INTERNAL: Initialize any platform-specific operatorsboolean
INTERNAL: Override this method if the platform supports sequence objects and it's possible to alter sequence object's increment in the database.boolean
Calling a stored procedure query on PostgreSQL with no output parameters always returns true from an execute call regardless if a result set is returned or not.boolean
INTERNAL: Answers whether platform is Postgres.protected ExpressionOperator
INTERNAL: Override the default locate operator.protected ExpressionOperator
INTERNAL: Override the default locate operator.void
printFieldIdentityClause
(Writer writer) INTERNAL: Append the receiver's field 'identity' constraint clause to a writer.void
printFieldTypeSize
(Writer writer, FieldDefinition field, org.eclipse.persistence.internal.databaseaccess.FieldTypeDefinition fieldType, boolean shouldPrintFieldIdentityClause) void
printFieldUnique
(Writer writer, boolean shouldPrintFieldIdentityClause) 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 Postgres syntax " LIMIT <max> OFFSET <first>".static ExpressionOperator
INTERNAL: Create the ~ operator.protected void
setNullFromDatabaseField
(org.eclipse.persistence.internal.helper.DatabaseField databaseField, PreparedStatement statement, int index) boolean
INTERNAL: Indicates whether locking OF clause should print alias for field.boolean
This is required in the construction of the stored procedures with output parametersboolean
JDBC defines and outer join syntax, many drivers do not support this.boolean
INTERNAL: Indicates whether the platform supports identity.boolean
INTERNAL:boolean
INTERNAL: Indicates whether the platform supports sequence objects.protected ExpressionOperator
INTERNAL: Postgres to_number has two arguments, as fix format argument.void
writeUpdateOriginalFromTempTableSql
(Writer writer, org.eclipse.persistence.internal.helper.DatabaseTable table, Collection pkFields, Collection assignedFields) INTERNAL: May need to override this method if the platform supports temporary tables and the generated sql doesn't work.Methods inherited from class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
addBatch, addStructConverter, allowBindingForSelectClause, allowsSizeInProcedureArguments, appendByteArray, appendCalendar, appendDate, appendLiteralToCall, appendLiteralToCallWithBinding, appendNumber, appendParameter, appendParameterInternal, appendString, appendTime, appendTimestamp, autoCommit, beginTransaction, buildBatchCriteria, buildBatchCriteriaForComplexId, buildClassTypes, buildCreateIndex, buildCreateIndex, buildDropIndex, buildDropIndex, buildSequenceObjectAlterIncrementWriter, buildSequenceObjectCreationWriter, buildSequenceObjectDeletionWriter, canBatchWriteWithOptimisticLocking, checkTableExists, commitTransaction, convertToDatabaseType, copyInto, createArray, createArray, createPlatformDefaultSequence, createStruct, createStruct, createStruct, dontBindUpdateAllQueryUsingTempTables, executeBatch, executeStoredProcedure, freeTemporaryObject, getBatchBeginString, getBatchDelimiterString, getBatchEndString, getBatchRowCountAssignString, getBatchRowCountDeclareString, getBatchRowCountReturnString, getBatchWritingMechanism, getCastSizeForVarcharParameter, getClassTypes, getConnection, getConnectionUserName, getConstraintDeletionString, getCreateDatabaseSchemaString, getCreateTempTableSqlBodyForTable, getCreateViewString, getCreationInOutputProcedureToken, getCreationOutputProcedureToken, getCursorCode, getCustomModifyValueForCall, getDefaultSequenceTableName, getDriverSupportsNVarChar, getDropDatabaseSchemaString, getFieldTypeDefinition, getFieldTypes, getFunctionCallHeader, getIndexNamePrefix, getInputProcedureToken, getJDBCOuterJoinString, getJDBCType, getJDBCTypeForSetNull, getJdbcTypeName, getMaxBatchWritingSize, getMaxForeignKeyNameSize, getMaxIndexNameSize, getMaxUniqueKeyNameSize, getNoWaitString, getObjectFromResultSet, getOutputProcedureToken, getParameterValueFromDatabaseCall, getParameterValueFromDatabaseCall, getPartitioningCallback, getPingSQL, getProcedureArgument, getProcedureArgument, getProcedureArgumentString, getProcedureAsString, getProcedureCallHeader, getProcedureCallTail, getProcedureOptionList, getQualifiedName, getQualifiedSequenceTableName, getRefValue, getRefValue, getSelectForUpdateNoWaitString, getSelectForUpdateOfString, getSelectForUpdateString, getSelectForUpdateWaitString, getSequenceCounterFieldName, getSequenceNameFieldName, getSequencePreallocationSize, getSequenceTableName, getStatementCacheSize, getStoredProcedureParameterPrefix, getStoredProcedureTerminationToken, getStringBindingSize, getStructConverters, getTableCreationSuffix, getTableExistsQuery, getTempTableForTable, getTransactionIsolation, getTypeConverters, getUniqueConstraintDeletionString, getUseNationalCharacterVaryingTypeForString, getVPDClearIdentifierQuery, getVPDCreationFunctionString, getVPDCreationPolicyString, getVPDDeletionString, getVPDSetIdentifierQuery, hasPartitioningCallback, initialize, initializeConnectionData, isCastRequired, isDynamicSQLRequiredForFunctions, isForUpdateCompatibleWithDistinct, isInformixOuterJoin, isLobCompatibleWithDistinct, isLockTimeoutException, isNullAllowedInSelectClause, isOutputAllowWithResultSet, isRowCountOutputParameterRequired, isXDBDocument, maximumNumericValues, minimumNumericValues, minimumTimeIncrement, prepareBatchStatement, printFieldNotNullClause, printFieldNullClause, printFieldTypeSize, printFieldUnique, printStoredFunctionReturnKeyWord, printValuelist, printValuelist, registerOutputParameter, registerOutputParameter, registerOutputParameter, registerOutputParameter, requiresNamedPrimaryKeyConstraints, requiresProcedureBrackets, requiresProcedureCallBrackets, requiresProcedureCallOuputToken, requiresTableInIndexDropDDL, requiresTypeNameToRegisterOutputParameter, requiresUniqueConstraintCreationOnTableCreate, retrieveFirstPrimaryKeyOrOne, rollbackTransaction, setBatchWritingMechanism, setCastSizeForVarcharParameter, setClassTypes, setCursorCode, setDriverName, setDriverSupportsNVarChar, setFieldTypes, setIsCastRequired, setMaxBatchWritingSize, 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, shouldPrintConstraintNameAfter, shouldPrintFieldIdentityClause, shouldPrintForUpdateClause, shouldPrintInnerJoinInWhereClause, shouldPrintInOutputTokenBeforeType, shouldPrintInputTokenAtStart, shouldPrintLockingClauseAfterWhereClause, shouldPrintOuterJoinInWhereClause, shouldPrintOutputTokenBeforeType, shouldPrintStoredProcedureArgumentNameInCall, shouldPrintStoredProcedureVariablesAfterBeginString, shouldTempTableSpecifyPrimaryKeys, shouldTrimStrings, shouldUseCustomModifyForCall, shouldUseGetSetNString, shouldUseRownumFiltering, supportsANSIInnerJoinSyntax, supportsAutoCommit, supportsAutoConversionToNumericForArithmeticOperations, supportsConnectionUserName, supportsCountDistinctWithMultipleFields, supportsDeleteOnCascade, supportsForeignKeyConstraints, supportsGlobalTempTables, supportsIndexes, supportsIndividualTableLocking, supportsLockingQueriesWithMultipleTables, 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
Methods inherited from class org.eclipse.persistence.internal.databaseaccess.DatasourcePlatform
addOperator, addSequence, addSequence, buildNativeCall, buildSelectQueryForIdentity, buildSelectQueryForSequenceObject, clone, convertObject, createConnectionCustomizer, createExpressionFor, getConversionManager, getDataTypesConvertedFrom, getDataTypesConvertedTo, getDefaultNativeSequenceToTable, getDefaultSeqenceAtNextValue, getDefaultSequence, getDefaultSequenceToWrite, getEndDelimiter, getINClauseLimit, getOperator, getPlatformOperators, getSelectSequenceQuery, getSequence, getSequences, getSequencesToWrite, getStartDelimiter, getTableQualifier, getTimestampFromServer, getUpdateSequenceQuery, hasDefaultSequence, initializeDefaultQueries, initIdentitySequences, isAccess, isAttunity, isCloudscape, isDB2, isDB2Z, isDBase, isDerby, isFirebird, isH2, isHANA, isHSQL, isInformix, isMaxDB, isMySQL, isODBC, isOracle, isOracle12, isOracle9, isPervasive, isPointBase, isSQLAnywhere, isSQLServer, isSybase, isSymfoware, isTimesTen, isTimesTen7, removeAllSequences, removeIdentitySequences, removeSequence, sequencesAfterCloneCleanup, setConversionManager, setDefaultNativeSequenceToTable, setDefaultSeqenceAtNextValue, setDefaultSequence, setEndDelimiter, setSelectSequenceNumberQuery, setSequencePreallocationSize, setSequences, setStartDelimiter, setSupportsReturnGeneratedKeys, setTableQualifier, setTimestampQuery, setUpdateSequenceQuery, shouldNativeSequenceUseTransaction, shouldPrepare, shouldSelectDistinctIncludeOrderBy, shouldSelectIncludeOrderBy, supportsNativeSequenceNumbers, supportsReturnGeneratedKeys, toString, usesPlatformDefaultSequence
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Constructor Details
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PostgreSQLPlatform
public PostgreSQLPlatform()
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Method Details
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getJDBCType
Return the JDBC type for the Java type. For some reason PostgreSQL does not seem to like the JDBC Blob type (PostgreSQL 8.2).- Overrides:
getJDBCType
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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appendBoolean
Appends a Boolean value. Refer to : http://www.postgresql.org/docs/8.0/static/datatype-boolean.html In PostgreSQL the following are the values that are value for a boolean field Valid literal values for the "true" state are: TRUE, 't', 'true', 'y', 'yes', '1' Valid literal values for the false" state are : FALSE, 'f', 'false', 'n', 'no', '0' To be consistent with the other data platforms we are using the values '1' and '0' for true and false states of a boolean field.- Overrides:
appendBoolean
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
- Throws:
IOException
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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 PostGreSQL uses case #2 and therefore the maxResults has to be altered based on the firstResultIndex- Overrides:
computeMaxRowsForSQL
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
- Parameters:
firstResultIndex
-maxResults
-- See Also:
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initializePlatformOperators
protected void initializePlatformOperators()INTERNAL: Initialize any platform-specific operators- Overrides:
initializePlatformOperators
in classorg.eclipse.persistence.internal.databaseaccess.DatasourcePlatform
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regexpOperator
INTERNAL: Create the ~ operator. REGEXP allows for comparison through regular expression. -
toNumberOperator
INTERNAL: Postgres to_number has two arguments, as fix format argument. -
getTimestampQuery
INTERNAL: This method returns the query to select the timestamp from the server for Postgres.- Specified by:
getTimestampQuery
in interfaceorg.eclipse.persistence.internal.databaseaccess.Platform
- Overrides:
getTimestampQuery
in classorg.eclipse.persistence.internal.databaseaccess.DatasourcePlatform
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getInOutputProcedureToken
This method is used to print the output parameter token when stored procedures are called- Overrides:
getInOutputProcedureToken
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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shouldPrintOutputTokenAtStart
public boolean shouldPrintOutputTokenAtStart()This is required in the construction of the stored procedures with output parameters- Overrides:
shouldPrintOutputTokenAtStart
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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isJDBCExecuteCompliant
public boolean isJDBCExecuteCompliant()Calling a stored procedure query on PostgreSQL with no output parameters always returns true from an execute call regardless if a result set is returned or not. This flag will help avoid throwing a JPA mandated exception on an executeUpdate call (which calls jdbc execute and checks the return value to ensure no results sets are returned (true))- Overrides:
isJDBCExecuteCompliant
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
- See Also:
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isPostgreSQL
public boolean isPostgreSQL()INTERNAL: Answers whether platform is Postgres.- Specified by:
isPostgreSQL
in interfaceorg.eclipse.persistence.internal.databaseaccess.Platform
- Overrides:
isPostgreSQL
in classorg.eclipse.persistence.internal.databaseaccess.DatasourcePlatform
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getCreateTempTableSqlSuffix
INTERNAL:- Overrides:
getCreateTempTableSqlSuffix
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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shouldPrintAliasForUpdate
public boolean shouldPrintAliasForUpdate()INTERNAL: Indicates whether locking OF clause should print alias for field. Example: on Oracle platform (method returns false): SELECT ADDRESS_ID, ... FROM ADDRESS T1 WHERE (T1.ADDRESS_ID = ?) FOR UPDATE OF T1.ADDRESS_ID on Postgres platform (method returns true): SELECT ADDRESS_ID, ... FROM ADDRESS T1 WHERE (T1.ADDRESS_ID = ?) FOR UPDATE OF T1- Overrides:
shouldPrintAliasForUpdate
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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supportsIdentity
public boolean supportsIdentity()INTERNAL: Indicates whether the platform supports identity.- Overrides:
supportsIdentity
in classorg.eclipse.persistence.internal.databaseaccess.DatasourcePlatform
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buildSelectQueryForIdentity
INTERNAL: Returns query used to read back the value generated by Identity. This method is called when identity NativeSequence is connected, the returned query used until the sequence is disconnected. If the platform supportsIdentity then (at least) one of buildSelectQueryForIdentity methods should return non-null query.- Overrides:
buildSelectQueryForIdentity
in classorg.eclipse.persistence.internal.databaseaccess.DatasourcePlatform
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supportsSequenceObjects
public boolean supportsSequenceObjects()INTERNAL: Indicates whether the platform supports sequence objects.- Overrides:
supportsSequenceObjects
in classorg.eclipse.persistence.internal.databaseaccess.DatasourcePlatform
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buildSelectQueryForSequenceObject
INTERNAL: Returns query used to read value generated by sequence object (like Oracle sequence). This method is called when sequence object NativeSequence is connected, the returned query used until the sequence is disconnected. If the platform supportsSequenceObjects then (at least) one of buildSelectQueryForSequenceObject methods should return non-null query.- Overrides:
buildSelectQueryForSequenceObject
in classorg.eclipse.persistence.internal.databaseaccess.DatasourcePlatform
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printFieldIdentityClause
INTERNAL: Append the receiver's field 'identity' constraint clause to a writer.- Overrides:
printFieldIdentityClause
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
- Throws:
ValidationException
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buildFieldTypes
Description copied from class:org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
Return the mapping of class types to database types for the schema framework.- Overrides:
buildFieldTypes
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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operatorLocate
INTERNAL: Override the default locate operator. -
operatorLocate2
INTERNAL: Override the default locate operator. -
supportsLocalTempTables
public boolean supportsLocalTempTables()INTERNAL:- Overrides:
supportsLocalTempTables
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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getCreateTempTableSqlPrefix
INTERNAL:- Overrides:
getCreateTempTableSqlPrefix
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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getMaxFieldNameSize
public int getMaxFieldNameSize()INTERNAL: returns the maximum number of characters that can be used in a field name on this platform.- Overrides:
getMaxFieldNameSize
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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getProcedureBeginString
INTERNAL: Used for sp calls.- Overrides:
getProcedureBeginString
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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getProcedureEndString
INTERNAL: Used for sp calls.- Overrides:
getProcedureEndString
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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buildProcedureCallString
public String buildProcedureCallString(StoredProcedureCall call, org.eclipse.persistence.internal.sessions.AbstractSession session, org.eclipse.persistence.internal.sessions.AbstractRecord row) INTERNAL: Used for sp calls. PostGreSQL uses a different method for executing StoredProcedures than other platforms.- Overrides:
buildProcedureCallString
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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getAssignmentString
INTERNAL Used for stored function calls.- Overrides:
getAssignmentString
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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getDropCascadeString
Allows DROP TABLE to cascade dropping of any dependent constraints if the database supports this option.- Overrides:
getDropCascadeString
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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printFieldTypeSize
public void printFieldTypeSize(Writer writer, FieldDefinition field, org.eclipse.persistence.internal.databaseaccess.FieldTypeDefinition fieldType, boolean shouldPrintFieldIdentityClause) throws IOException - Overrides:
printFieldTypeSize
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
- Throws:
IOException
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printFieldUnique
public void printFieldUnique(Writer writer, boolean shouldPrintFieldIdentityClause) throws IOException - Overrides:
printFieldUnique
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
- Throws:
IOException
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shouldUseJDBCOuterJoinSyntax
public boolean shouldUseJDBCOuterJoinSyntax()JDBC defines and outer join syntax, many drivers do not support this. So we normally avoid it.- Overrides:
shouldUseJDBCOuterJoinSyntax
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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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 classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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printSQLSelectStatement
public void printSQLSelectStatement(org.eclipse.persistence.internal.databaseaccess.DatabaseCall call, org.eclipse.persistence.internal.expressions.ExpressionSQLPrinter printer, org.eclipse.persistence.internal.expressions.SQLSelectStatement statement) Print the pagination SQL using Postgres syntax " LIMIT <max> OFFSET <first>".- Overrides:
printSQLSelectStatement
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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writeUpdateOriginalFromTempTableSql
public void writeUpdateOriginalFromTempTableSql(Writer writer, org.eclipse.persistence.internal.helper.DatabaseTable table, Collection pkFields, Collection assignedFields) throws IOException INTERNAL: May need to override this method if the platform supports temporary tables and the generated sql doesn't work. Write an sql string for updating the original table from the temporary table. Precondition: supportsTempTables() == true. Precondition: pkFields and assignFields don't intersect.- Overrides:
writeUpdateOriginalFromTempTableSql
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
- Parameters:
writer
- for writing the sqltable
- is original table for which temp table is created.pkFields
- - primary key fields for the original table.assignedFields
- - fields to be assigned a new value.- Throws:
IOException
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canBuildCallWithReturning
public boolean canBuildCallWithReturning()INTERNAL: Postgres has a returning clause.- Overrides:
canBuildCallWithReturning
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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buildCallWithReturning
public org.eclipse.persistence.internal.databaseaccess.DatabaseCall buildCallWithReturning(SQLCall sqlCall, Vector returnFields) INTERNAL: Uses the returning clause on Postgres.- Overrides:
buildCallWithReturning
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
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setNullFromDatabaseField
protected void setNullFromDatabaseField(org.eclipse.persistence.internal.helper.DatabaseField databaseField, PreparedStatement statement, int index) throws SQLException - Overrides:
setNullFromDatabaseField
in classorg.eclipse.persistence.internal.databaseaccess.DatabasePlatform
- Throws:
SQLException
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