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

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

All Implemented Interfaces:

TypeHandler

Direct Known Subclasses:

BinaryHandler, DateHandler, DefaultTypeHandler, DoubleHandler, DurationHandler, EnumHandler, FloatHandler, IntegerHandler, LongHandler, NodeHandler, StringHandler

public abstract class AbstractTypeHandler

extends Object

implements TypeHandler

Since:

MMBase-1.6

Version:

$Id: AbstractTypeHandler.java,v 1.48 2006/04/27 17:35:59 michiel Exp $

Author:

Gerard van de Looi, Michiel Meeuwissen

Warning: No Java Documentation Available.

Field Summary

protected EnumHandler	eh
protected boolean	gotEnumHandler
protected FieldInfoTag	tag

Constructor Summary

AbstractTypeHandler(FieldInfoTag tag)
Constructor for AbstractTypeHandler.

Method Summary

protected StringBuffer	addExtraAttributes(StringBuffer buf)
protected Object	cast(Object value, Node node, Field field)
String	checkHtmlInput(Node node, Field field, boolean errors) Produces a div, containing the error message for the current value, or the empty string if everything ok.
protected String	findString(Field field)
protected String	getClasses(Field field)
protected EnumHandler	getEnumHandler(Node node, Field field)
protected Object	getFieldValue(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 int	getOperator() The operator to be used by whereHtmlInput(field, query)
protected String	getSearchValue(String string) Converts the value to the actual value to be searched.
String	htmlInput(Node node, Field field, boolean search) Produces an form input field for the given Node, and Field.
void	init()
protected boolean	interpretEmptyAsNull(Field field)
void	paramHtmlInput(ParamHandler handler, Field field)
protected String	prefix(String s) Puts a prefix before a name.
protected String	prefixError(String s)
protected String	prefixID(String s) Puts a prefix 'mm_' before an id in form fields.
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 java.lang.Object

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

Field Detail

tag

protected FieldInfoTag tag

eh

protected EnumHandler eh

gotEnumHandler

protected boolean gotEnumHandler

Constructor Detail

AbstractTypeHandler

public AbstractTypeHandler(FieldInfoTag tag)

Constructor for AbstractTypeHandler.

Method Detail

init

public void init()

Specified by:

init in interface TypeHandler

getEnumHandler

protected EnumHandler getEnumHandler(Node node,
                                     Field field)
                              throws JspTagException

Throws:

JspTagException

addExtraAttributes

protected StringBuffer addExtraAttributes(StringBuffer buf)
                                   throws JspTagException

Throws:

JspTagException

getClasses

protected String getClasses(Field field)

Since:

MMBase-1.8

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

Parameters:

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

Throws:

JspTagException

See Also:

TypeHandler.htmlInput(Node, Field, boolean)

getFieldValue

protected Object getFieldValue(Field field)
                        throws JspTagException

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

Throws:

JspTagException

interpretEmptyAsNull

protected boolean interpretEmptyAsNull(Field field)

cast

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

getFieldValue

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

Returns the field value to be used in the page.

Throws:

JspTagException

checkHtmlInput

public String checkHtmlInput(Node node,
                             Field field,
                             boolean errors)
                      throws JspTagException

Description copied from interface: TypeHandler

Produces a div, containing the error message for the current value, or the empty string if everything ok.

Specified by:

checkHtmlInput in interface TypeHandler

Parameters:

errors - Whether to output the error messages (otherwises only invalidates form)

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

Throws:

JspTagException

See Also:

TypeHandler.useHtmlInput(Node, Field)

whereHtmlInput

public String whereHtmlInput(Field field)
                      throws JspTagException

Specified by:

whereHtmlInput in interface TypeHandler

Returns:

Piece of SQL. null if no constraint.

Throws:

JspTagException

See Also:

TypeHandler.whereHtmlInput(Field)

getOperator

protected int getOperator()

The operator to be used by whereHtmlInput(field, query)

Since:

MMBase-1.7

getSearchValue

protected String getSearchValue(String string)

Converts the value to the actual value to be searched. (mainly targeted at StringHandler).

Since:

MMBase-1.7

findString

protected final String findString(Field field)
                           throws JspTagException

Throws:

JspTagException

Since:

MMBase-1.7

paramHtmlInput

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

Specified by:

paramHtmlInput in interface TypeHandler

Throws:

JspTagException

whereHtmlInput

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

Adds search constraint to Query object.

Specified by:

whereHtmlInput in interface TypeHandler

Returns:

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

Throws:

JspTagException

prefix

protected String prefix(String s)
                 throws JspTagException

Puts a prefix before a name. This is used in htmlInput and useHtmlInput, they need it to get a reasonably unique value for the name attribute of form elements.

Throws:

JspTagException

prefixID

protected String prefixID(String s)
                   throws JspTagException

Puts a prefix 'mm_' before an id in form fields. To be used in ccs etc..

Parameters:

s - Fieldname

Returns:

String with the id, like f.e. 'mm_title'

Throws:

JspTagException

prefixError

protected String prefixError(String s)
                      throws JspTagException

Throws:

JspTagException