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

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

All Implemented Interfaces:

TypeHandler

public class DateHandler
extends AbstractTypeHandler

Since:

MMBase-1.6

Version:

$Id: DateHandler.java 42199 2010-05-17 14:01:46Z michiel $

Author:

Michiel Meeuwissen, Vincent vd Locht

Field Summary

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

eh, gotEnumHandler, tag

Constructor Summary

DateHandler(FieldInfoTag tag)

Method Summary

protected int	checkYear(int y, String fieldName) Just to override.
protected Calendar	getCalendarValue(Node node, Field field)
protected Object	getFieldValue(Node node, Field field) Returns the field value as specified by the client's post.
protected Object	getFieldValue(Node node, Field field, boolean useDefault) Returns the field value to be used in the page.
protected DateTimePattern	getPattern(DataType dt)
protected Calendar	getSpecifiedValue(Field field, Calendar cal)
String	htmlInput(Node node, Field field, boolean search) Produces an form input field for the given Node, and Field.
void	paramHtmlInput(ParamHandler handler, Field 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, cast, checkHtmlInput, convertToValidate, findString, getClasses, getClassName, getEnumHandler, getOperator, getOperator, getSearchValue, getSearchValue, getValue, htmlInputId, init, interpretEmptyAsNull, prefix, prefixError, prefixID, setValue

Methods inherited from class java.lang.Object

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

Constructor Detail

DateHandler

public DateHandler(FieldInfoTag tag)

Parameters:

tag -

Method Detail

getPattern

protected DateTimePattern getPattern(DataType dt)
                              throws JspTagException

Throws:

JspTagException

getFieldValue

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

Returns the field value as specified by the client's post.

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

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)

checkYear

protected int checkYear(int y,
                        String fieldName)
                 throws JspTagException

Just to override. For example if the date is stored in an int and not in a long, then the year can be checked.

Returns:

int

Throws:

JspTagException

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)

getSpecifiedValue

protected Calendar getSpecifiedValue(Field field,
                                     Calendar cal)
                              throws JspTagException

Returns:

The given Calendar instance or null

Throws:

JspTagException

getFieldValue

protected Object getFieldValue(Node node,
                               Field field,
                               boolean useDefault)
                        throws JspTagException

Description copied from class: AbstractTypeHandler

Returns the field value to be used in the page. This is either the values returned by AbstractTypeHandler.getFieldValue(Node, Field), or if that returns null, it returns the current value in the node, or if there is no node specified, the default value specified by the datatype.

Overrides:

getFieldValue in class AbstractTypeHandler

Throws:

JspTagException

getCalendarValue

protected Calendar getCalendarValue(Node node,
                                    Field field)
                             throws JspTagException

Throws:

JspTagException

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

paramHtmlInput

public void paramHtmlInput(ParamHandler handler,
                           Field field)
                    throws JspTagException

Specified by:

paramHtmlInput in interface TypeHandler

Overrides:

paramHtmlInput in class AbstractTypeHandler

Throws:

JspTagException