org.josql.expressions

类 LikeExpression

java.lang.Object

org.josql.expressions.Expression

org.josql.expressions.BinaryExpression

org.josql.expressions.LikeExpression

public class LikeExpression
extends BinaryExpression

字段概要

从类继承的字段 org.josql.expressions.BinaryExpression

left, right

构造器概要

构造器

构造器和说明
LikeExpression()

方法概要

限定符和类型	方法和说明
void	init(Query q) Init the expression, we over-ride here so that if the RHS is fixed we can init the pattern that will be used to match the expression.
boolean	isIgnoreCase()
boolean	isNot()
boolean	isTrue(Object o, Query q) Returns whether the LHS is "LIKE" the RHS.
void	setIgnoreCase(boolean v)
void	setNot(boolean v)
String	toString() Returns a string version of the expression.

从类继承的方法 org.josql.expressions.BinaryExpression

getExpectedReturnType, getLeft, getRight, getValue, hasFixedResult, setLeft, setRight

从类继承的方法 org.josql.expressions.Expression

isBracketed, setBracketed

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

LikeExpression

public LikeExpression()

方法详细资料

isIgnoreCase

public boolean isIgnoreCase()

init

public void init(Query q)
          throws QueryParseException

Init the expression, we over-ride here so that if the RHS is fixed we can init the pattern that will be used to match the expression.

覆盖:

init 在类中 BinaryExpression

参数:

q - The Query object.

抛出:

QueryParseException - If the LHS and/or RHS cannot be inited.

setIgnoreCase

public void setIgnoreCase(boolean v)

isNot

public boolean isNot()

setNot

public void setNot(boolean v)

isTrue

public boolean isTrue(Object o,
                      Query q)
               throws QueryExecutionException

Returns whether the LHS is "LIKE" the RHS. A special case here is that if the LHS and RHS are both null then true is returned. Also, if either the LHS or RHS is not null and one is null then false is returned.

指定者:

isTrue 在类中 Expression

参数:

o - The object to evaluate the expression on.

q - The Query object.

返回:

true if the LHS is "LIKE" the RHS, false if not. And using "NOT" will invert the result.

抛出:

QueryExecutionException - If the expression cannot be evaluated.

toString

public String toString()

Returns a string version of the expression. Returns in the form:

   Expression [ NOT ] [ $ ]LIKE Expression
 

指定者:

toString 在类中 Expression

返回:

A string representation of the expression.