程序包 org.hibernate.dialect

类 DB2390Dialect

java.lang.Object

org.hibernate.dialect.Dialect

org.hibernate.dialect.DB2Dialect

org.hibernate.dialect.DB2390Dialect

所有已实现的接口:

ConversionContext

直接已知子类:

DB2390V8Dialect

public class DB2390Dialect
extends DB2Dialect

An SQL dialect for DB2/390. This class provides support for DB2 Universal Database for OS/390, also known as DB2/390.

作者:

Kristoffer Dyrkorn

字段概要

从类继承的字段 org.hibernate.dialect.Dialect

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

构造器概要

构造器

构造器	说明
DB2390Dialect()

方法概要

修饰符和类型	方法	说明
IdentityColumnSupport	getIdentityColumnSupport()	Get the appropriate IdentityColumnSupport
LimitHandler	getLimitHandler()	Returns the delegate managing LIMIT clause.
String	getLimitString(String sql, int offset, int limit)	Given a limit and an offset, apply the limit clause to the query.
String	getQuerySequencesString()	Get the select command used retrieve the names of all sequences.
boolean	supportsLimit()	Does this dialect support some form of limiting query results via a SQL clause?
boolean	supportsLimitOffset()	Does this dialect's LIMIT support (if any) additionally support specifying an offset?
boolean	supportsSequences()	Does this dialect support sequences?
boolean	supportsVariableLimit()	Does this dialect support bind variables (i.e., prepared statement parameters) for its limit/offset?
boolean	useMaxForLimit()	Does the LIMIT clause take a "maximum" row number instead of a total number of returned rows?

从类继承的方法 org.hibernate.dialect.DB2Dialect

buildSQLExceptionConversionDelegate, convertToFirstRowValue, doesReadCommittedCauseWritersToBlockReaders, dropConstraints, getAddColumnString, getCreateSequenceString, getCrossJoinSeparator, getCurrentTimestampSelectString, getDefaultMultiTableBulkIdStrategy, getDropSequenceString, getForUpdateString, getLowercaseFunction, getNotExpression, getResultSet, getSelectClauseNullString, getSelectSequenceNextValString, getSequenceInformationExtractor, getSequenceNextValString, getSqlTypeDescriptorOverride, getUniqueDelegate, isCurrentTimestampSelectStringCallable, registerResultSetOutParameter, renderOrderByElement, requiresCastingOfParametersInSelectClause, supportsCommentOn, supportsCurrentTimestampSelection, supportsEmptyInList, supportsExistsInSelect, supportsLobValueChangePropogation, supportsLockTimeouts, supportsOuterJoinForUpdate, supportsParametersInInsertSelect, supportsPartitionBy, supportsPooledSequences, supportsResultSetPositionQueryMethodsOnForwardOnlyCursor, supportsTupleDistinctCounts, supportsUnionAll

从类继承的方法 org.hibernate.dialect.Dialect

addSqlHintOrComment, appendLockHint, appendLockHint, applyLocksToSql, areStringComparisonsCaseInsensitive, augmentRecognizedTableTypes, bindLimitParametersFirst, bindLimitParametersInReverseOrder, buildIdentifierHelper, buildSQLExceptionConverter, canCreateCatalog, canCreateSchema, cast, cast, cast, closeQuote, contributeTypes, createCaseFragment, createOuterJoinFragment, defaultScrollMode, doesRepeatableReadCauseReadersToBlockWriters, escapeLiteral, forceLimitUsage, forceLobAsLastValue, forUpdateOfColumns, getAddColumnSuffixString, getAddForeignKeyConstraintString, getAddForeignKeyConstraintString, getAddPrimaryKeyConstraintString, getAddUniqueConstraintString, getAlterTableString, getAuxiliaryDatabaseObjectExporter, getCallableStatementSupport, getCascadeConstraintsString, getCaseInsensitiveLike, getCastTypeName, getColumnAliasExtractor, getColumnComment, getCreateCatalogCommand, getCreateMultisetTableString, getCreateSchemaCommand, getCreateSequenceString, getCreateSequenceStrings, getCreateSequenceStrings, getCreateTableString, getCurrentSchemaCommand, getCurrentTimestampSQLFunctionName, getDefaultBatchLoadSizingStrategy, getDefaultProperties, getDialect, getDialect, getDropCatalogCommand, getDropForeignKeyString, getDropSchemaCommand, getDropSequenceStrings, getDropTableString, getForeignKeyExporter, getForUpdateNowaitString, getForUpdateNowaitString, getForUpdateSkipLockedString, getForUpdateSkipLockedString, getForUpdateString, getForUpdateString, getForUpdateString, getForUpdateString, getFunctions, getHibernateTypeName, getHibernateTypeName, getIndexExporter, getInExpressionCountLimit, getKeywords, getLimitString, getLobMergeStrategy, getLockingStrategy, getMaxAliasLength, getNameQualifierSupport, getNativeIdentifierGeneratorClass, getNativeIdentifierGeneratorStrategy, getNoColumnsInsertString, getNullColumnString, getQueryHintString, getQueryHintString, getReadLockString, getReadLockString, getResultSet, getResultSet, getSchemaNameResolver, getSelectGUIDString, getSequenceExporter, getTableComment, getTableExporter, getTableTypeString, getTypeName, getTypeName, getUniqueKeyExporter, getViolatedConstraintNameExtracter, getWriteLockString, getWriteLockString, hasAlterTable, hasSelfReferentialForeignKeyBug, inlineLiteral, isJdbcLogWarningsEnabledByDefault, isLegacyLimitHandlerBehaviorEnabled, isLockTimeoutParameterized, isTypeNameRegistered, openQuote, prependComment, qualifyIndexName, quote, registerColumnType, registerColumnType, registerFunction, registerHibernateType, registerHibernateType, registerKeyword, registerResultSetOutParameter, remapSqlTypeDescriptor, replaceResultVariableInOrderByClauseWithPosition, requiresParensForTupleDistinctCounts, supportsBindAsCallableArgument, supportsCascadeDelete, supportsCaseInsensitiveLike, supportsCircularCascadeDeleteConstraints, supportsColumnCheck, supportsExpectedLobUsagePattern, supportsIfExistsAfterAlterTable, supportsIfExistsAfterConstraintName, supportsIfExistsAfterTableName, supportsIfExistsBeforeConstraintName, supportsIfExistsBeforeTableName, supportsJdbcConnectionLobCreation, supportsNamedParameters, supportsNationalizedTypes, supportsNoColumnsInsert, supportsNonQueryWithCTE, supportsNotNullUnique, supportsNoWait, supportsRowValueConstructorSyntax, supportsRowValueConstructorSyntaxInInList, supportsSelectAliasInGroupByClause, supportsSkipLocked, supportsSubqueryOnMutatingTable, supportsSubselectAsInPredicateLHS, supportsTableCheck, supportsTupleCounts, supportsTuplesInSubqueries, supportsUnboundedLobLocatorMaterialization, supportsUnique, supportsUniqueConstraintInCreateAlterTable, supportsValuesList, toBooleanValueString, toString, transformSelectString, useFollowOnLocking, useFollowOnLocking, useInputStreamToInsertBlob

从类继承的方法 java.lang.Object

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

构造器详细资料

DB2390Dialect

public DB2390Dialect()

方法详细资料

supportsSequences

public boolean supportsSequences()

从类复制的说明: Dialect

Does this dialect support sequences?

覆盖:

supportsSequences 在类中 DB2Dialect

返回:

True if sequences supported; false otherwise.

getQuerySequencesString

public String getQuerySequencesString()

从类复制的说明: Dialect

Get the select command used retrieve the names of all sequences.

覆盖:

getQuerySequencesString 在类中 DB2Dialect

返回:

The select command; or null if sequences are not supported.

另请参阅:

SchemaUpdate

supportsLimit

public boolean supportsLimit()

从类复制的说明: Dialect

Does this dialect support some form of limiting query results via a SQL clause?

覆盖:

supportsLimit 在类中 DB2Dialect

返回:

True if this dialect supports some form of LIMIT.

supportsLimitOffset

public boolean supportsLimitOffset()

从类复制的说明: Dialect

Does this dialect's LIMIT support (if any) additionally support specifying an offset?

覆盖:

supportsLimitOffset 在类中 Dialect

返回:

True if the dialect supports an offset within the limit support.

useMaxForLimit

public boolean useMaxForLimit()

从类复制的说明: Dialect

Does the LIMIT clause take a "maximum" row number instead of a total number of returned rows?

This is easiest understood via an example. Consider you have a table with 20 rows, but you only want to retrieve rows number 11 through 20. Generally, a limit with offset would say that the offset = 11 and the limit = 10 (we only want 10 rows at a time); this is specifying the total number of returned rows. Some dialects require that we instead specify offset = 11 and limit = 20, where 20 is the "last" row we want relative to offset (i.e. total number of rows = 20 - 11 = 9)

So essentially, is limit relative from offset? Or is limit absolute?

覆盖:

useMaxForLimit 在类中 DB2Dialect

返回:

True if limit is relative from offset; false otherwise.

supportsVariableLimit

public boolean supportsVariableLimit()

从类复制的说明: Dialect

Does this dialect support bind variables (i.e., prepared statement parameters) for its limit/offset?

覆盖:

supportsVariableLimit 在类中 DB2Dialect

返回:

True if bind variables can be used; false otherwise.

getLimitString

public String getLimitString(String sql,
                             int offset,
                             int limit)

从类复制的说明: Dialect

Given a limit and an offset, apply the limit clause to the query.

覆盖:

getLimitString 在类中 DB2Dialect

参数:

sql - The query to which to apply the limit.

offset - The offset of the limit

limit - The limit of the limit ;)

返回:

The modified query statement with the limit applied.

getLimitHandler

public LimitHandler getLimitHandler()

从类复制的说明: Dialect

Returns the delegate managing LIMIT clause.

覆盖:

getLimitHandler 在类中 DB2Dialect

返回:

LIMIT clause delegate.

getIdentityColumnSupport

public IdentityColumnSupport getIdentityColumnSupport()

从类复制的说明: Dialect

Get the appropriate IdentityColumnSupport

覆盖:

getIdentityColumnSupport 在类中 DB2Dialect

返回:

the IdentityColumnSupport