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org.apache.slide.search.basic
Class NotNormalizer  

java.lang.Object
  org.apache.slide.search.basic.NotNormalizer

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public class NotNormalizer

extends java.lang.Object

This class recursivly removes all <not> expressions and replaces their successors by appropriate negated expressions. Since an example explains more than a thousand words:

 <D:not>
    <D:or>
       <D:lt>
          <D:prop>
             <D:getcontentlength>
          </D:prop>
          <D:literal>1000</D:literal>
       </D:lt>
       <D:eq>
          <D:prop>
             <D:getcontenttype>
          </D:prop>
          <D:literal>text/xml</D:literal>
       </D:eq>
    </D:or>
 </D:not>
 

will be transformed to

 <D:and>
    <D:not-lt>
       <D:prop>
          <D:getcontentlength>
       </D:prop>
       <D:literal>1000</D:literal>
    </D:not-lt>
    <D:not-eq>
       <D:prop>
          <D:getcontenttype>
       </D:prop>
       <D:literal>text/xml</D:literal>
    </D:not-eq>
 </D:and>
 

Version:

$Revision: 1.6 $

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Field Summary
static java.lang.String	BAD_NOT_EXPRESSION_EXCEPTION_MESSAGE           The message of the InvalidQueryException which is thrown by getQueryWithoutNotExpression 55 if a <not> expression has NOT exactly one successor.

 

Constructor Summary

NotNormalizer()

 

Method Summary
protected  org.jdom.Element	getNamedClone(org.jdom.Element source, java.lang.String newName, org.jdom.Namespace newNamespace)           Creates a new Element with the given newName in the newNamespace and sets the value (text) and attributes of the given source element.
protected  org.jdom.Element	getNegatedDAVQueryElement(org.jdom.Element expressionElement)           Returns the negation of the given expressionElement, which is in the DAV: namespace.
protected  org.jdom.Element	getNegatedQueryElement(org.jdom.Element expressionElement)           Returns the negation of the given expressionElement.
protected  org.jdom.Element	getNegatedSlideQueryElement(org.jdom.Element expressionElement)           Returns the negation of the given expressionElement, which is in the http://jakarta.apache.org/slide/ namespace.
protected  org.jdom.Element	getNegatedUnknownQueryElement(org.jdom.Element expressionElement)           Returns the negation of the given expressionElement, which is neither in DAV: nor http://jakarta.apache.org/slide/ namespace.
protected  org.jdom.Element	getProcessedElement(org.jdom.Element expressionElement, boolean negate)           Returns the appropriate replacement for the given expressionElement.
org.jdom.Element	getQueryWithoutNotExpression(org.jdom.Element expressionElement)           Returns the transformed query where all <not> elements has been removed.

 

Methods inherited from class java.lang.Object

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

 

Field Detail

BAD_NOT_EXPRESSION_EXCEPTION_MESSAGE

public static final java.lang.String BAD_NOT_EXPRESSION_EXCEPTION_MESSAGE

The message of the InvalidQueryException which is thrown by getQueryWithoutNotExpression 55 if a <not> expression has NOT exactly one successor.

See Also:

Constant Field Values

Constructor Detail

NotNormalizer

public NotNormalizer()

Method Detail

getQueryWithoutNotExpression

public org.jdom.Element getQueryWithoutNotExpression(org.jdom.Element expressionElement)
                                              throws org.apache.slide.search.BadQueryException

Returns the transformed query where all <not> elements has been removed.

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getProcessedElement

protected org.jdom.Element getProcessedElement(org.jdom.Element expressionElement,
                                               boolean negate)
                                        throws org.apache.slide.search.BadQueryException

Returns the appropriate replacement for the given expressionElement. If negate is true, the Element has to be negated.

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getNegatedQueryElement

protected org.jdom.Element getNegatedQueryElement(org.jdom.Element expressionElement)
                                           throws org.apache.slide.search.BadQueryException

Returns the negation of the given expressionElement.

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getNegatedUnknownQueryElement

protected org.jdom.Element getNegatedUnknownQueryElement(org.jdom.Element expressionElement)
                                                  throws org.apache.slide.search.BadQueryException

Returns the negation of the given expressionElement, which is neither in DAV: nor http://jakarta.apache.org/slide/ namespace.

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getNegatedDAVQueryElement

protected org.jdom.Element getNegatedDAVQueryElement(org.jdom.Element expressionElement)
                                              throws org.apache.slide.search.BadQueryException

Returns the negation of the given expressionElement, which is in the DAV: namespace.

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getNegatedSlideQueryElement

protected org.jdom.Element getNegatedSlideQueryElement(org.jdom.Element expressionElement)
                                                throws org.apache.slide.search.BadQueryException

Returns the negation of the given expressionElement, which is in the http://jakarta.apache.org/slide/ namespace.

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getNamedClone

protected org.jdom.Element getNamedClone(org.jdom.Element source,
                                         java.lang.String newName,
                                         org.jdom.Namespace newNamespace)

Creates a new Element with the given newName in the newNamespace and sets the value (text) and attributes of the given source element.

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Overview  Package   Class  Use  Deprecated  Index
Home >> All >> org >> apache >> slide >> search >> [ basic overview ]	PREV CLASS  NEXT CLASS
SUMMARY:  JAVADOC |  SOURCE |  DOWNLOAD | NESTED | FIELD | CONSTR | METHOD	DETAIL: FIELD | CONSTR | METHOD

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