oracle.toplink.internal.databaseaccess
Class InformixPlatform

java.lang.Object
oracle.toplink.internal.databaseaccess.DatabasePlatform
oracle.toplink.internal.databaseaccess.InformixPlatform

All Implemented Interfaces:

java.lang.Cloneable, java.io.Serializable

public class InformixPlatform

extends DatabasePlatform

Purpose: Provides Informix specific behaviour.

Responsibilities:

• Types for schema creation.
• Native sequencing using @@SERIAL.

Since:

TOPLink/Java 1.0.1

See Also:

Serialized Form

Field Summary

Fields inherited from class oracle.toplink.internal.databaseaccess.DatabasePlatform

DEFAULT_MAX_BATCH_WRITING_SIZE, DEFAULT_PARAMETERIZED_MAX_BATCH_WRITING_SIZE

Constructor Summary

InformixPlatform()

Method Summary

java.lang.String	getSelectForUpdateString() Informix seems to like this syntax instead of the OF * syntax.
boolean	isInformix()
boolean	isInformixOuterJoin() Some database require outer joins to be given in the where clause, others require it in the from clause.
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	printFieldIdentityClause(java.io.Writer writer) Append the receiver's field serial constraint clause to a writer.
boolean	requiresProcedureCallBrackets() USed for sp calls.
boolean	shouldPrintConstraintNameAfter() Some Platforms want the constraint name after the constraint definition.
boolean	shouldPrintOuterJoinInWhereClause() Some database require outer joins to be given in the where clause, others require it in the from clause.
boolean	supportsNativeSequenceNumbers() Return true if the receiver uses host sequence numbers, generated on the database.

Methods inherited from class oracle.toplink.internal.databaseaccess.DatabasePlatform

allowsSizeInProcedureArguments, appendParameter, autoCommit, beginTransaction, buildProcedureCallString, clone, commitTransaction, convertObject, copyInto, executeStoredProcedureCall, getBatchBeginString, getBatchDelimiterString, getBatchEndString, getClassTypes, getConversionManager, getCreationInOutputProcedureToken, getCreationOutputProcedureToken, getCursorCode, getFieldTypeDefinition, getFieldTypes, getInOutputProcedureToken, getJDBCType, getJDBCType, getMaxBatchWritingSize, getOperator, getOutputProcedureToken, getPlatformOperators, getProcedureArgumentSetter, getProcedureArgumentString, getProcedureCallHeader, getProcedureCallTail, getQualifiedSequenceTableName, getSelectForUpdateNoWaitString, getSelectSequenceQuery, getSequenceCounterFieldName, getSequenceNameFieldName, getSequencePreallocationSize, getSequenceTableName, getStatementCacheSize, getStoredProcedureParameterPrefix, getStoredProcedureTerminationToken, getStringBindingSize, getTableQualifier, getTimestampFromServer, getTimestampQuery, getTransactionIsolation, getUpdateSequenceQuery, initializePreallocatedSequences, isAccess, isAttunity, isCloudscape, isDB2, isDBase, isHSQL, isODBC, isOracle, isPointBase, isSQLAnywhere, isSQLServer, isSybase, printFieldNotNullClause, printFieldNullClause, printValuelist, printValuelist, registerOutputParameter, requiresNamedPrimaryKeyConstraints, requiresProcedureCallOuputToken, rollbackTransaction, setConversionManager, setCursorCode, setMaxBatchWritingSize, setSelectSequenceNumberQuery, setSequenceCounterFieldName, setSequenceNameFieldName, setSequencePreallocationSize, setSequenceTableName, setShouldBindAllParameters, setShouldCacheAllStatements, setShouldForceFieldNamesToUpperCase, setShouldIgnoreCaseOnFieldComparisons, setShouldOptimizeDataConversion, setShouldTrimStrings, setStatementCacheSize, setStringBindingSize, setSupportsAutoCommit, setTableQualifier, setTimestampQuery, setTransactionIsolation, setUpdateSequenceQuery, setUsesBatchWriting, setUsesByteArrayBinding, setUsesJDBCBatchWriting, setUsesNativeSQL, setUsesStreamsForBinding, setUsesStringBinding, shouldBindAllParameters, shouldCacheAllStatements, shouldForceFieldNamesToUpperCase, shouldIgnoreCaseOnFieldComparisons, shouldIgnoreException, shouldOptimizeDataConversion, shouldPrintInOutputTokenBeforeType, shouldPrintOutputTokenBeforeType, shouldTrimStrings, shouldUseJDBCOuterJoinSyntax, supportsAutoCommit, supportsForeignKeyConstraints, supportsPrimaryKeyConstraint, toString, usesBatchWriting, usesByteArrayBinding, usesJDBCBatchWriting, usesNativeSequencing, usesNativeSQL, usesSequenceTable, usesStreamsForBinding, usesStringBinding

Methods inherited from class java.lang.Object

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

Constructor Detail

InformixPlatform

public InformixPlatform()

Method Detail

getSelectForUpdateString

public java.lang.String getSelectForUpdateString()

Informix seems to like this syntax instead of the OF * syntax.

Overrides:

getSelectForUpdateString in class DatabasePlatform

isInformix

public boolean isInformix()

Overrides:

isInformix in class DatabasePlatform

isInformixOuterJoin

public boolean isInformixOuterJoin()

Some database require outer joins to be given in the where clause, others require it in the from clause. Informix requires it in the from clause with no ON expression.

Overrides:

isInformixOuterJoin in class DatabasePlatform

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 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 DatabasePlatform

printFieldIdentityClause

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

Append the receiver's field serial constraint clause to a writer.

Overrides:

printFieldIdentityClause in class DatabasePlatform

Throws:

ValidationException

requiresProcedureCallBrackets

public boolean requiresProcedureCallBrackets()

USed for sp calls.

Overrides:

requiresProcedureCallBrackets in class DatabasePlatform

shouldPrintConstraintNameAfter

public boolean shouldPrintConstraintNameAfter()

Some Platforms want the constraint name after the constraint definition.

Overrides:

shouldPrintConstraintNameAfter in class DatabasePlatform

shouldPrintOuterJoinInWhereClause

public boolean shouldPrintOuterJoinInWhereClause()

Some database require outer joins to be given in the where clause, others require it in the from clause.

Overrides:

shouldPrintOuterJoinInWhereClause in class DatabasePlatform

supportsNativeSequenceNumbers

public boolean supportsNativeSequenceNumbers()

Return true if the receiver uses host sequence numbers, generated on the database. Informix does this through SERIAL field types.

Overrides:

supportsNativeSequenceNumbers in class DatabasePlatform