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org.josql.expressions
Class InExpression  

java.lang.Object
  org.josql.expressions.Expression
      org.josql.expressions.BinaryExpression
          org.josql.expressions.InExpression

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public class InExpression

extends BinaryExpression

This class represents in [ NOT ] IN [ LIKE ] [ ALL ] expression. If any of the values listed are Maps or Collections then they are iterated over to see if a match is found. For Maps only the key values are checked. If you pass a list then it is iterated over using a for construct rather than an Iterator since it's much faster.

Note: due to the way that the expression is designed it is POSSIBLE to have a binary expression in the in list, however at this time that is not supported since it can lead to an ambiguous result, for example: true IN (true, false) has no sensible meaning.

Last Modified By: $Author: barrygently $
Last Modified On: $Date: 2005/04/28 05:48:59 $
Current Revision: $Revision: 1.3 $

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Field Summary
private  boolean	all
private  boolean	doLike
private  boolean	ignoreCase
private  java.util.List	items
private  java.util.Map	lPats
private  boolean	not

 

Fields inherited from class org.josql.expressions.BinaryExpression

left, right

 

Fields inherited from class org.josql.expressions.Expression

 

Constructor Summary

InExpression()

 

Method Summary
void	addItem(Expression e)
private  boolean	compareCollection(java.lang.Object o, java.util.Collection c, java.lang.String v, java.lang.String wc)
private  boolean	compareItem(java.lang.Object o, java.lang.Object n, java.lang.String v, java.lang.String wc)
private  boolean	compareList(java.lang.Object o, java.util.List l, java.lang.String v, java.lang.String wc)
private  boolean	compareMap(java.lang.Object o, java.util.Map m, java.lang.String v, java.lang.String wc)
java.util.List	getItems()
void	init(org.josql.Query q)           Initialise the IN expression.
boolean	isAll()
boolean	isDoLike()
boolean	isIgnoreCase()
boolean	isNot()
boolean	isTrue(java.lang.Object o, org.josql.Query q)           Return whether this expression evaulates to true.
void	setAll(boolean v)
void	setDoLike(boolean d)
void	setIgnoreCase(boolean v)
void	setItems(java.util.List items)
void	setNot(boolean v)
java.lang.String	toString()           Return a string representation of this expression.

 

Methods inherited from class org.josql.expressions.BinaryExpression

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

 

Methods inherited from class org.josql.expressions.Expression

isBracketed, setBracketed

 

Methods inherited from class java.lang.Object

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

 

Field Detail

items

private java.util.List items

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not

private boolean not

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doLike

private boolean doLike

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all

private boolean all

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lPats

private java.util.Map lPats

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ignoreCase

private boolean ignoreCase

Constructor Detail

InExpression

public InExpression()

Method Detail

init

public void init(org.josql.Query q)
          throws org.josql.QueryParseException

Initialise the IN expression. Init the LHS and then all of the values in the brackets.

Overrides:

init in class BinaryExpression

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setIgnoreCase

public void setIgnoreCase(boolean v)

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isIgnoreCase

public boolean isIgnoreCase()

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isAll

public boolean isAll()

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setAll

public void setAll(boolean v)

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isDoLike

public boolean isDoLike()

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setDoLike

public void setDoLike(boolean d)

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setItems

public void setItems(java.util.List items)

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getItems

public java.util.List getItems()

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addItem

public void addItem(Expression e)

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isNot

public boolean isNot()

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setNot

public void setNot(boolean v)

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isTrue

public boolean isTrue(java.lang.Object o,
                      org.josql.Query q)
               throws org.josql.QueryExecutionException

Return whether this expression evaulates to true. If any of the values on RHS are Maps (keys only) or Collections then they are iterated over and checked against the LHS.

Specified by:

isTrue in class Expression

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compareCollection

private boolean compareCollection(java.lang.Object o,
                                  java.util.Collection c,
                                  java.lang.String v,
                                  java.lang.String wc)

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compareList

private boolean compareList(java.lang.Object o,
                            java.util.List l,
                            java.lang.String v,
                            java.lang.String wc)

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compareItem

private boolean compareItem(java.lang.Object o,
                            java.lang.Object n,
                            java.lang.String v,
                            java.lang.String wc)

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compareMap

private boolean compareMap(java.lang.Object o,
                           java.util.Map m,
                           java.lang.String v,
                           java.lang.String wc)

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toString

public java.lang.String toString()

Return a string representation of this expression. In the form: Expression 55 [ NOT ] [$]IN [ LIKE ] [ ALL ] ( Expression 55 [ , Expression 55 * ] )

Specified by:

toString in class Expression

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Home >> All >> org >> josql >> [ expressions overview ]	PREV CLASS  NEXT CLASS
SUMMARY:  JAVADOC |  SOURCE |  DOWNLOAD | NESTED | FIELD | CONSTR | METHOD	DETAIL: FIELD | CONSTR | METHOD

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