org.hibernate.dialect

Class Oracle9iDialect

java.lang.Object

org.hibernate.dialect.Dialect

org.hibernate.dialect.Oracle8iDialect

org.hibernate.dialect.Oracle9iDialect

All Implemented Interfaces:

ConversionContext

Direct Known Subclasses:

Oracle10gDialect

public class Oracle9iDialect
extends Oracle8iDialect

A dialect for Oracle 9i databases.

Specifies to not use "ANSI join syntax" because 9i does not seem to properly handle it in all cases.

Author:

Steve Ebersole

Field Summary

Fields inherited from class org.hibernate.dialect.Oracle8iDialect

DEPRECATED_ORACLE_TYPES_CLASS_NAME, INIT_ORACLETYPES_CURSOR_VALUE, ORACLE_TYPES_CLASS_NAME

Fields inherited from class org.hibernate.dialect.Dialect

CLOSED_QUOTE, DEFAULT_BATCH_SIZE, LEGACY_LOB_MERGE_STRATEGY, NEW_LOCATOR_LOB_MERGE_STRATEGY, NO_BATCH, QUOTE, STREAM_XFER_LOB_MERGE_STRATEGY

Constructor Summary

Constructors

Constructor and Description
Oracle9iDialect()

Method Summary

Methods

Modifier and Type	Method and Description
CaseFragment	createCaseFragment() Map case support to the Oracle DECODE function.
String	getCurrentTimestampSelectString() Retrieve the command used to retrieve the current timestamp from the database.
String	getCurrentTimestampSQLFunctionName() The name of the database-specific SQL function for retrieving the current timestamp.
String	getForUpdateString() Get the string to append to SELECT statements to acquire locks for this dialect.
String	getLimitString(String sql, boolean hasOffset) Apply s limit clause to the query.
String	getReadLockString(int timeout) Get the string to append to SELECT statements to acquire WRITE locks for this dialect.
String	getSelectClauseNullString(int sqlType) Given a Types type code, determine an appropriate null value to use in a select clause.
String	getWriteLockString(int timeout) Get the string to append to SELECT statements to acquire WRITE locks for this dialect.
protected void	registerCharacterTypeMappings()
protected void	registerDateTimeTypeMappings()
boolean	supportsRowValueConstructorSyntaxInInList() HHH-4907, I don't know if oracle 8 supports this syntax, so I'd think it is better add this method here.
boolean	supportsTupleDistinctCounts() Does this dialect support `count(distinct a,b)`?

Methods inherited from class org.hibernate.dialect.Oracle8iDialect

bindLimitParametersInReverseOrder, createOuterJoinFragment, dropConstraints, dropTemporaryTableAfterUse, extractOracleCursorTypeValue, forUpdateOfColumns, generateTemporaryTableName, getAddColumnString, getBasicSelectClauseNullString, getCascadeConstraintsString, getCreateSequenceString, getCreateTemporaryTablePostfix, getCreateTemporaryTableString, getCrossJoinSeparator, getDropSequenceString, getForUpdateNowaitString, getForUpdateNowaitString, getForUpdateString, getOracleCursorTypeSqlType, getQuerySequencesString, getResultSet, getSelectGUIDString, getSelectSequenceNextValString, getSequenceNextValString, getSqlTypeDescriptorOverride, getViolatedConstraintNameExtracter, isCurrentTimestampSelectStringCallable, registerDefaultProperties, registerFunctions, registerLargeObjectTypeMappings, registerNumericTypeMappings, registerResultSetOutParameter, registerReverseHibernateTypeMappings, supportsCommentOn, supportsCurrentTimestampSelection, supportsEmptyInList, supportsExistsInSelect, supportsLimit, supportsPooledSequences, supportsSequences, supportsTemporaryTables, supportsUnionAll, useMaxForLimit

Methods inherited from class org.hibernate.dialect.Dialect

appendIdentitySelectToInsert, appendLockHint, applyLocksToSql, areStringComparisonsCaseInsensitive, bindLimitParametersFirst, buildSQLExceptionConversionDelegate, buildSQLExceptionConverter, closeQuote, convertToFirstRowValue, doesReadCommittedCauseWritersToBlockReaders, doesRepeatableReadCauseReadersToBlockWriters, forceLimitUsage, getAddForeignKeyConstraintString, getAddPrimaryKeyConstraintString, getAddUniqueConstraintString, getCaseInsensitiveLike, getCastTypeName, getColumnAliasExtractor, getColumnComment, getCreateMultisetTableString, getCreateSequenceString, getCreateSequenceStrings, getCreateSequenceStrings, getCreateTableString, getDefaultProperties, getDialect, getDialect, getDropForeignKeyString, getDropSequenceStrings, getDropTemporaryTableString, getForUpdateString, getForUpdateString, getForUpdateString, getFunctions, getHibernateTypeName, getHibernateTypeName, getIdentityColumnString, getIdentityColumnString, getIdentityInsertString, getIdentitySelectString, getIdentitySelectString, getKeywords, getLimitString, getLobMergeStrategy, getLockingStrategy, getLowercaseFunction, getMaxAliasLength, getNativeIdentifierGeneratorClass, getNoColumnsInsertString, getNullColumnString, getTableComment, getTableTypeString, getTypeName, getTypeName, hasAlterTable, hasDataTypeInIdentityColumn, hasSelfReferentialForeignKeyBug, isLockTimeoutParameterized, openQuote, performTemporaryTableDDLInIsolation, qualifyIndexName, quote, registerColumnType, registerColumnType, registerFunction, registerHibernateType, registerHibernateType, registerKeyword, remapSqlTypeDescriptor, replaceResultVariableInOrderByClauseWithPosition, requiresCastingOfParametersInSelectClause, supportsBindAsCallableArgument, supportsCascadeDelete, supportsCaseInsensitiveLike, supportsCircularCascadeDeleteConstraints, supportsColumnCheck, supportsExpectedLobUsagePattern, supportsIdentityColumns, supportsIfExistsAfterTableName, supportsIfExistsBeforeTableName, supportsInsertSelectIdentity, supportsLimitOffset, supportsLobValueChangePropogation, supportsLockTimeouts, supportsNotNullUnique, supportsOuterJoinForUpdate, supportsParametersInInsertSelect, supportsResultSetPositionQueryMethodsOnForwardOnlyCursor, supportsRowValueConstructorSyntax, supportsSubqueryOnMutatingTable, supportsSubselectAsInPredicateLHS, supportsTableCheck, supportsTupleCounts, supportsUnboundedLobLocatorMaterialization, supportsUnique, supportsUniqueConstraintInCreateAlterTable, supportsVariableLimit, toBooleanValueString, toString, transformSelectString, useInputStreamToInsertBlob

Methods inherited from class java.lang.Object

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

Constructor Detail

Oracle9iDialect

public Oracle9iDialect()

Method Detail

registerCharacterTypeMappings

protected void registerCharacterTypeMappings()

Overrides:

registerCharacterTypeMappings in class Oracle8iDialect

registerDateTimeTypeMappings

protected void registerDateTimeTypeMappings()

Overrides:

registerDateTimeTypeMappings in class Oracle8iDialect

createCaseFragment

public CaseFragment createCaseFragment()

Description copied from class: Oracle8iDialect

Map case support to the Oracle DECODE function. Oracle did not add support for CASE until 9i.

Overrides:

createCaseFragment in class Oracle8iDialect

Returns:

The oracle CASE -> DECODE fragment

getLimitString

public String getLimitString(String sql,
                    boolean hasOffset)

Description copied from class: Dialect

Apply s limit clause to the query.

Typically dialects utilize variable limit clauses when they support limits. Thus, when building the select command we do not actually need to know the limit or the offest since we will just be using placeholders.

Here we do still pass along whether or not an offset was specified so that dialects not supporting offsets can generate proper exceptions. In general, dialects will override one or the other of this method and Dialect.getLimitString(String, int, int).

Overrides:

getLimitString in class Oracle8iDialect

Parameters:

sql - The query to which to apply the limit.

hasOffset - Is the query requesting an offset?

Returns:

the modified SQL

getSelectClauseNullString

public String getSelectClauseNullString(int sqlType)

Description copied from class: Dialect

Given a Types type code, determine an appropriate null value to use in a select clause.

One thing to consider here is that certain databases might require proper casting for the nulls here since the select here will be part of a UNION/UNION ALL.

Overrides:

getSelectClauseNullString in class Oracle8iDialect

Parameters:

sqlType - The Types type code.

Returns:

The appropriate select clause value fragment.

getCurrentTimestampSelectString

public String getCurrentTimestampSelectString()

Description copied from class: Dialect

Retrieve the command used to retrieve the current timestamp from the database.

Overrides:

getCurrentTimestampSelectString in class Oracle8iDialect

Returns:

The command.

getCurrentTimestampSQLFunctionName

public String getCurrentTimestampSQLFunctionName()

Description copied from class: Dialect

The name of the database-specific SQL function for retrieving the current timestamp.

Overrides:

getCurrentTimestampSQLFunctionName in class Oracle8iDialect

Returns:

The function name.

getForUpdateString

public String getForUpdateString()

Description copied from class: Dialect

Get the string to append to SELECT statements to acquire locks for this dialect.

Overrides:

getForUpdateString in class Dialect

Returns:

The appropriate FOR UPDATE clause string.

getWriteLockString

public String getWriteLockString(int timeout)

Description copied from class: Dialect

Get the string to append to SELECT statements to acquire WRITE locks for this dialect. Location of the of the returned string is treated the same as getForUpdateString.

Overrides:

getWriteLockString in class Dialect

Parameters:

timeout - in milliseconds, -1 for indefinite wait and 0 for no wait.

Returns:

The appropriate LOCK clause string.

getReadLockString

public String getReadLockString(int timeout)

Description copied from class: Dialect

Get the string to append to SELECT statements to acquire WRITE locks for this dialect. Location of the of the returned string is treated the same as getForUpdateString.

Overrides:

getReadLockString in class Dialect

Parameters:

timeout - in milliseconds, -1 for indefinite wait and 0 for no wait.

Returns:

The appropriate LOCK clause string.

supportsRowValueConstructorSyntaxInInList

public boolean supportsRowValueConstructorSyntaxInInList()

HHH-4907, I don't know if oracle 8 supports this syntax, so I'd think it is better add this method here. Reopen this issue if you found/know 8 supports it.

Overrides:

supportsRowValueConstructorSyntaxInInList in class Dialect

Returns:

True if this SQL dialect is known to support "row value constructor" syntax in the IN list; false otherwise.

supportsTupleDistinctCounts

public boolean supportsTupleDistinctCounts()

Description copied from class: Dialect

Does this dialect support `count(distinct a,b)`?

Overrides:

supportsTupleDistinctCounts in class Dialect

Returns:

True if the database supports counting distinct tuples; false otherwise.