butler.sql.filter
Class IsNullFilter

java.lang.Object
  butler.sql.filter.Filter
      butler.sql.filter.IsNullFilter

Direct Known Subclasses:

IsNull

public class IsNullFilter
extends Filter

Filter for checking if a value is null.

Author:

Fredrik Bertilsson

Constructor Summary

IsNullFilter(Column column)

IsNullFilter(java.lang.String alias, Column column)

Method Summary

Column	getColumn()
java.lang.String	getSQL()
java.util.List	getValues(QueryParams params)
Filter	modify(QueryParams params)
static Filter	parse(org.dom4j.Element element, java.util.Map tableDictonary)
static Filter	parse(org.dom4j.Element element, Query q, Query rootQ)
void	toXML(org.xml.sax.ContentHandler handler)

Methods inherited from class butler.sql.filter.Filter

and, copy, createId, equals, filter, getCaption, getFilter, getId, getLeafFilters, getNestedQuery, getOperator, getParamDatatypes, getValues, hashCode, not, or, params2db, parseFilter, registerFilterParser, setCaption, setId, setOperator, setSize, setSize, toXML

Methods inherited from class java.lang.Object

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

Constructor Detail

IsNullFilter

public IsNullFilter(Column column)

IsNullFilter

public IsNullFilter(java.lang.String alias,
                    Column column)

Method Detail

getSQL

public java.lang.String getSQL()

Overrides:

getSQL in class Filter

getColumn

public Column getColumn()

toXML

public void toXML(org.xml.sax.ContentHandler handler)
           throws java.lang.Exception

Overrides:

toXML in class Filter

Throws:

java.lang.Exception

parse

public static Filter parse(org.dom4j.Element element,
                           Query q,
                           Query rootQ)
                    throws java.lang.Exception

Throws:

java.lang.Exception

parse

public static Filter parse(org.dom4j.Element element,
                           java.util.Map tableDictonary)
                    throws java.lang.Exception

Throws:

java.lang.Exception

modify

public Filter modify(QueryParams params)
              throws java.lang.Exception

Overrides:

modify in class Filter

Throws:

java.lang.Exception

getValues

public java.util.List getValues(QueryParams params)
                         throws java.lang.Exception

Overrides:

getValues in class Filter

Throws:

java.lang.Exception