org.mmbase.bridge.jsp.taglib.typehandler
Class BooleanHandler

java.lang.Object
  org.mmbase.bridge.jsp.taglib.typehandler.AbstractTypeHandler
      org.mmbase.bridge.jsp.taglib.typehandler.BooleanHandler

All Implemented Interfaces:

TypeHandler

public class BooleanHandler
extends AbstractTypeHandler

Since:

MMBase-1.6

Version:

$Id: BooleanHandler.java 41317 2010-03-10 06:50:04Z mark $

Author:

Pierre van Rooden

Javadoc:

Field Summary

Fields inherited from class org.mmbase.bridge.jsp.taglib.typehandler.AbstractTypeHandler

eh, gotEnumHandler, tag

Constructor Summary

BooleanHandler(FieldInfoTag tag)

Method Summary

protected Object	cast(Object value, Node node, Field field)
Object	getFieldValue(Node node, Field field) Returns the field value as specified by the client's post.
String	htmlInput(Node node, Field field, boolean search) Produces an form input field for the given Node, and Field.
boolean	useHtmlInput(Node node, Field field) returns true if setValue happened.
String	whereHtmlInput(Field field)
Constraint	whereHtmlInput(Field field, Query query) Adds search constraint to Query object.

Methods inherited from class org.mmbase.bridge.jsp.taglib.typehandler.AbstractTypeHandler

addExtraAttributes, checkHtmlInput, convertToValidate, findString, getClasses, getClassName, getEnumHandler, getFieldValue, getOperator, getOperator, getSearchValue, getSearchValue, getValue, htmlInputId, init, interpretEmptyAsNull, paramHtmlInput, prefix, prefixError, prefixID, setValue

Methods inherited from class java.lang.Object

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

Constructor Detail

BooleanHandler

public BooleanHandler(FieldInfoTag tag)
               throws JspTagException

Throws:

JspTagException

Method Detail

htmlInput

public String htmlInput(Node node,
                        Field field,
                        boolean search)
                 throws JspTagException

Description copied from interface: TypeHandler

Produces an form input field for the given Node, and Field.

Specified by:

htmlInput in interface TypeHandler

Overrides:

htmlInput in class AbstractTypeHandler

search - if true, then a search field is produced.

Throws:

JspTagException

See Also:

TypeHandler.htmlInput(Node, Field, boolean)

useHtmlInput

public boolean useHtmlInput(Node node,
                            Field field)
                     throws JspTagException

Description copied from interface: TypeHandler

returns true if setValue happened.

Specified by:

useHtmlInput in interface TypeHandler

Overrides:

useHtmlInput in class AbstractTypeHandler

Throws:

JspTagException

See Also:

TypeHandler.useHtmlInput(Node, Field)

whereHtmlInput

public String whereHtmlInput(Field field)
                      throws JspTagException

Specified by:

whereHtmlInput in interface TypeHandler

Overrides:

whereHtmlInput in class AbstractTypeHandler

Returns:

Piece of SQL. null if no constraint.

Throws:

JspTagException

See Also:

TypeHandler.whereHtmlInput(Field)

whereHtmlInput

public Constraint whereHtmlInput(Field field,
                                 Query query)
                          throws JspTagException

Description copied from class: AbstractTypeHandler

Adds search constraint to Query object.

Specified by:

whereHtmlInput in interface TypeHandler

Overrides:

whereHtmlInput in class AbstractTypeHandler

Returns:

null if nothing to be searched, the constraint if constraint added

Throws:

JspTagException

cast

protected Object cast(Object value,
                      Node node,
                      Field field)

Overrides:

cast in class AbstractTypeHandler

getFieldValue

public Object getFieldValue(Node node,
                            Field field)
                     throws JspTagException

Description copied from class: AbstractTypeHandler

Returns the field value as specified by the client's post. This is only null if the client didn't post a thing. It can be empty if the client means null (depending on the value of AbstractTypeHandler.interpretEmptyAsNull(org.mmbase.bridge.Field)).

Overrides:

getFieldValue in class AbstractTypeHandler

Parameters:

node - This parameter could be used if the client does not fully specify the field's value (possible e.g. with Date fields). The existing specification could be used then.

Returns:

null if the client did not post, something else if it did. If the client meant to set null, this method should return the empty string.

Throws:

JspTagException