org.h2.expression.function

类 Function2

java.lang.Object

org.h2.expression.Expression

org.h2.expression.Operation2

org.h2.expression.function.Function2

所有已实现的接口:

NamedExpression, HasSQL, Typed

直接已知子类:

MathFunction2, NullIfFunction, SetFunction, SignalFunction, StringFunction2

public abstract class Function2
extends Operation2
implements NamedExpression

Function with two arguments.

字段概要

从类继承的字段 org.h2.expression.Operation2

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

限定符	构造器和说明
protected	Function2(Expression left, Expression right)

方法概要

限定符和类型	方法和说明
StringBuilder	getUnenclosedSQL(StringBuilder builder, int sqlFlags) Get the SQL statement of this expression.
Value	getValue(SessionLocal session) Return the resulting value for the current row.
protected Value	getValue(SessionLocal session, Value v1, Value v2) Returns the value of this function.

从类继承的方法 org.h2.expression.Operation2

getCost, getSubexpression, getSubexpressionCount, getType, isEverything, 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, optimize, 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.expression.function.NamedExpression

getName

从接口继承的方法 org.h2.util.HasSQL

getTraceSQL

构造器详细资料

Function2

protected Function2(Expression left,
                    Expression right)

方法详细资料

getValue

public Value getValue(SessionLocal session)

从类复制的说明: Expression

Return the resulting value for the current row.

指定者:

getValue 在类中 Expression

参数:

session - the session

返回:

the result

getValue

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

Returns the value of this function.

参数:

session - the session

v1 - the value of first argument

v2 - the value of second argument

返回:

the resulting value

getUnenclosedSQL

public StringBuilder getUnenclosedSQL(StringBuilder builder,
                                      int sqlFlags)

从类复制的说明: Expression

Get the SQL statement of this expression. This may not always be the original SQL statement, especially after optimization. Enclosing '(' and ')' are never appended.

指定者:

getUnenclosedSQL 在类中 Expression

参数:

builder - string builder

sqlFlags - formatting flags

返回:

the specified string builder