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

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

All Implemented Interfaces:

TypeHandler

Direct Known Subclasses:

XmlHandler

public class StringHandler
extends AbstractTypeHandler

A TypeHandler for strings, textareas and text-input. Search values are SQL escaped.

Since:

MMBase-1.6

Version:

$Id: StringHandler.java 35335 2009-05-21 08:14:41Z michiel $

Author:

Gerard van de Looi, Michiel Meeuwissen

Field Summary

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

eh, gotEnumHandler, tag

Constructor Summary

StringHandler(FieldInfoTag tag)
Constructor for StringHandler.

Method Summary

protected int	getCols(Field field)
protected Object	getFieldValue(Node node, Field field) Returns the field value as specified by the client's post.
protected int	getOperator(Field field) The operator to be used by whereHtmlInput(field, query)
protected Object	getValue(Node node, String fieldName)
String	htmlInput(Node node, Field field, boolean search) Produces an form input field for the given Node, and Field.
protected boolean	interpretEmptyAsNull(Field field)
protected void	setValue(Node node, String fieldName, Object value)
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, getFieldValue, getOperator, getSearchValue, getSearchValue, htmlInputId, init, paramHtmlInput, prefix, prefixError, prefixID

Methods inherited from class java.lang.Object

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

Constructor Detail

StringHandler

public StringHandler(FieldInfoTag tag)

Constructor for StringHandler.

Method Detail

getCols

protected int getCols(Field field)

Since:

MMBase-1.9.1

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)

setValue

protected void setValue(Node node,
                        String fieldName,
                        Object value)

Overrides:

setValue in class AbstractTypeHandler

getValue

protected Object getValue(Node node,
                          String fieldName)

Overrides:

getValue in class AbstractTypeHandler

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)

getFieldValue

protected 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

interpretEmptyAsNull

protected boolean interpretEmptyAsNull(Field field)

Overrides:

interpretEmptyAsNull in class AbstractTypeHandler

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)

getOperator

protected int getOperator(Field field)

Description copied from class: AbstractTypeHandler

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

Overrides:

getOperator in class AbstractTypeHandler

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