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 /*
  * Copyright 2002-2006 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.springframework.beans;
Interface that defines type conversion methods. Typically (but not necessarily) implemented in conjunction with the PropertyEditorRegistry interface.

Author(s):
Juergen Hoeller
Since:
2.0
See also:
PropertyEditorRegistry
SimpleTypeConverter
BeanWrapperImpl
public interface TypeConverter {

Convert the value to the required type (if necessary from a String).

Conversions from String to any type will typically use the setAsText method of the PropertyEditor class. Note that a PropertyEditor must be registered for the given class for this to work; this is a standard JavaBeans API. A number of PropertyEditors are automatically registered.

Parameters:
value the value to convert
requiredType the type we must convert to (or null if not known, for example in case of a collection element)
Returns:
the new value, possibly the result of type conversion
Throws:
TypeMismatchException if type conversion failed
See also:
java.beans.PropertyEditor.setAsText(java.lang.String)
java.beans.PropertyEditor.getValue()
	Object convertIfNecessary(Object valueClass requiredTypethrows TypeMismatchException;

Convert the value to the required type (if necessary from a String).

Conversions from String to any type will typically use the setAsText method of the PropertyEditor class. Note that a PropertyEditor must be registered for the given class for this to work; this is a standard JavaBeans API. A number of PropertyEditors are automatically registered.

Parameters:
value the value to convert
requiredType the type we must convert to (or null if not known, for example in case of a collection element)
methodParam the method parameter that is the target of the conversion (for analysis of generic types; may be null)
Returns:
the new value, possibly the result of type conversion
Throws:
TypeMismatchException if type conversion failed
See also:
java.beans.PropertyEditor.setAsText(java.lang.String)
java.beans.PropertyEditor.getValue()
	Object convertIfNecessary(Object valueClass requiredTypeMethodParameter methodParam)
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