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java.lang.Objectorg.apache.slide.search.basic.NotNormalizer
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>
Field Summary | |
static java.lang.String |
BAD_NOT_EXPRESSION_EXCEPTION_MESSAGE
The message of the InvalidQueryException which is thrown by getQueryWithoutNotExpression 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 |
public static final java.lang.String BAD_NOT_EXPRESSION_EXCEPTION_MESSAGE
InvalidQueryException
which is thrown by getQueryWithoutNotExpression
if a <not>
expression has
NOT exactly one successor.
Constructor Detail |
public NotNormalizer()
Method Detail |
public org.jdom.Element getQueryWithoutNotExpression(org.jdom.Element expressionElement) throws BadQueryException
<not>
elements
has been removed.
expressionElement
- the (root) Element of the query to transform.
<not>
elements
has been removed.
BadQueryException
- if transformin the query failed
(see BAD_NOT_EXPRESSION_EXCEPTION_MESSAGE
).protected org.jdom.Element getProcessedElement(org.jdom.Element expressionElement, boolean negate) throws BadQueryException
expressionElement
.
If negate
is true, the Element has to be negated.
expressionElement
- the Element for which to return the
appropriate replacement.negate
- if negate
is true, the given
Element has to be negated.
expressionElement
.
BadQueryException
- if the Element could not be processed.protected org.jdom.Element getNegatedQueryElement(org.jdom.Element expressionElement) throws BadQueryException
expressionElement
.
expressionElement
- the Element to return the appropriate
negation for.
expressionElement
.
BadQueryException
- if the Element could not be processed.protected org.jdom.Element getNegatedUnknownQueryElement(org.jdom.Element expressionElement) throws BadQueryException
expressionElement
,
which is neither in DAV:
nor
http://jakarta.apache.org/slide/
namespace.
expressionElement
- the Element to return the appropriate
negation for.
expressionElement
.
BadQueryException
- if the Element could not be processed.protected org.jdom.Element getNegatedDAVQueryElement(org.jdom.Element expressionElement) throws BadQueryException
expressionElement
,
which is in the DAV:
namespace.
expressionElement
- the Element to return the appropriate
negation for.
expressionElement
.
BadQueryException
- if the Element could not be processed.protected org.jdom.Element getNegatedSlideQueryElement(org.jdom.Element expressionElement) throws BadQueryException
expressionElement
,
which is in the http://jakarta.apache.org/slide/
namespace.
expressionElement
- the Element to return the appropriate
negation for.
expressionElement
.
BadQueryException
- if the Element could not be processed.protected org.jdom.Element getNamedClone(org.jdom.Element source, java.lang.String newName, org.jdom.Namespace newNamespace)
newName
in the
newNamespace
and sets the value (text) and attributes
of the given source
element.
source
- the Element from which to copy the value and attributes.newName
- the name to use for the Element to create.newNamespace
- the Namespace to use for the Element to create.
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