org.h2.expression.function

类 CompatibilitySequenceValueFunction

java.lang.Object

org.h2.expression.Expression

org.h2.expression.Operation1_2

org.h2.expression.function.Function1_2

org.h2.expression.function.CompatibilitySequenceValueFunction

所有已实现的接口:

NamedExpression, HasSQL, Typed

public final class CompatibilitySequenceValueFunction
extends Function1_2

NEXTVAL() and CURRVAL() compatibility functions.

字段概要

从类继承的字段 org.h2.expression.Operation1_2

left, right, type

从类继承的字段 org.h2.expression.Expression

AUTO_PARENTHESES, MAP_IN_AGGREGATE, MAP_IN_WINDOW, MAP_INITIAL, WITH_PARENTHESES, WITHOUT_PARENTHESES

从接口继承的字段 org.h2.util.HasSQL

ADD_PLAN_INFORMATION, DEFAULT_SQL_FLAGS, NO_CASTS, QUOTE_ONLY_WHEN_REQUIRED, REPLACE_LOBS_FOR_TRACE, TRACE_SQL_FLAGS

构造器概要

构造器

构造器和说明
CompatibilitySequenceValueFunction(Expression left, Expression right, boolean current)

方法概要

限定符和类型	方法和说明
String	getName() Get the name.
Value	getValue(SessionLocal session, Value v1, Value v2) Returns the value of this function.
boolean	isEverything(ExpressionVisitor visitor) Check if this expression and all sub-expressions can fulfill a criteria.
Expression	optimize(SessionLocal session) Try to optimize the expression.

从类继承的方法 org.h2.expression.function.Function1_2

getUnenclosedSQL, getValue

从类继承的方法 org.h2.expression.Operation1_2

getCost, getSubexpression, getSubexpressionCount, getType, mapColumns, setEvaluatable, updateAggregate

从类继承的方法 org.h2.expression.Expression

addFilterConditions, createIndexConditions, getAlias, getBooleanValue, getColumnName, getColumnNameForView, getEnclosedSQL, getNonAliasExpression, getNotIfPossible, getNullable, getSchemaName, getSQL, getSQL, getSQL, getSQL, getTableAlias, getTableName, getWhenSQL, getWhenValue, isConstant, isIdentity, isNullConstant, isValueSet, isWhenConditionOperand, needParentheses, optimizeCondition, toString, writeExpressions, writeExpressions

从类继承的方法 java.lang.Object

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

从接口继承的方法 org.h2.util.HasSQL

getTraceSQL

构造器详细资料

CompatibilitySequenceValueFunction

public CompatibilitySequenceValueFunction(Expression left,
                                          Expression right,
                                          boolean current)

方法详细资料

getValue

public Value getValue(SessionLocal session,
                      Value v1,
                      Value v2)

从类复制的说明: Function1_2

Returns the value of this function.

覆盖:

getValue 在类中 Function1_2

参数:

session - the session

v1 - the value of first argument

v2 - the value of second argument, or null

返回:

the resulting value

optimize

public Expression optimize(SessionLocal session)

从类复制的说明: Expression

Try to optimize the expression.

指定者:

optimize 在类中 Expression

参数:

session - the session

返回:

the optimized expression

isEverything

public boolean isEverything(ExpressionVisitor visitor)

从类复制的说明: Expression

Check if this expression and all sub-expressions can fulfill a criteria. If any part returns false, the result is false.

覆盖:

isEverything 在类中 Operation1_2

参数:

visitor - the visitor

返回:

if the criteria can be fulfilled

getName

public String getName()

从接口复制的说明: NamedExpression

Get the name.

返回:

the name in uppercase