javax.slee.profile.query

Class LessThan

java.lang.Object

javax.slee.profile.query.QueryExpression

javax.slee.profile.query.SimpleQueryExpression

javax.slee.profile.query.OrderedQueryExpression

javax.slee.profile.query.LessThan

All Implemented Interfaces:

Serializable

public final class LessThan
extends OrderedQueryExpression

The GreaterThan class represents a dynamic query expression that checks whether the value of a profile attribute is greater than a specified value.

This query expression can only be used with profile attributes whose class implements the Comparable interface.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
LessThan(String attrName, Object attrValue) Create a LessThan query expression.
LessThan(String attrName, String attrValue, QueryCollator collator) Create a LessThan query expression.

Method Summary

Methods

Modifier and Type	Method and Description
protected String	getRelation() Get the symbol or other name for this expression relation to be used in the toString output.

Methods inherited from class javax.slee.profile.query.SimpleQueryExpression

getAttributeName, getAttributeValue, getCollator, toString

Methods inherited from class javax.slee.profile.query.QueryExpression

toString

Methods inherited from class java.lang.Object

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

Constructor Detail

LessThan

public LessThan(String attrName,
        Object attrValue)
         throws NullPointerException

Create a LessThan query expression. A profile will match the expression criteria if the value of the attrName attribute is less than attrValue, as determined by Comparable.compareTo(Object).

Parameters:

attrName - the name of the profile attribute to compare.

attrValue - the value of the attribute to compare with.

Throws:

NullPointerException - if either argument is null.

IllegalArgumentException - if the class of attrValue does not implement the java.lang.Comparable interface.

LessThan

public LessThan(String attrName,
        String attrValue,
        QueryCollator collator)
         throws NullPointerException

Create a LessThan query expression. A profile will match the expression criteria if the value of the attrName attribute is less than attrValue, as determined by Collator.compare(String, String), where the collator is obtained from the specified QueryCollator.

Parameters:

attrName - the name of the profile attribute to compare.

attrValue - the value of the attribute to compare with.

collator - the collator to use for the comparison. May be null.

Throws:

NullPointerException - if either attrName or attrValue is null.

Method Detail

getRelation

protected String getRelation()

Description copied from class: SimpleQueryExpression

Get the symbol or other name for this expression relation to be used in the toString output.

Specified by:

getRelation in class SimpleQueryExpression

Returns:

the symbol or other name for this expression relation.