org.apache.commons.beanutils.converters
Class AbstractArrayConverter

java.lang.Object
  org.apache.commons.beanutils.converters.AbstractArrayConverter

All Implemented Interfaces:

Converter

Direct Known Subclasses:

BooleanArrayConverter, ByteArrayConverter, CharacterArrayConverter, DoubleArrayConverter, FloatArrayConverter, IntegerArrayConverter, LongArrayConverter, ShortArrayConverter, StringArrayConverter

Deprecated. Replaced by the new ArrayConverter implementation

public abstract class AbstractArrayConverter
extends Object
implements Converter

Convenience base class for converters that translate the String representation of an array into a corresponding array of primitives object. This class encapsulates the functionality required to parse the String into a list of String elements that can later be individually converted to the appropriate primitive type.

The input syntax accepted by the parseElements() method is designed to be compatible with the syntax used to initialize arrays in a Java source program, except that only String literal values are supported. For maximum flexibility, the surrounding '{' and '}' characters are optional, and individual elements may be separated by any combination of whitespace and comma characters.

Since:

1.4

Version:

$Revision: 690380 $ $Date: 2008-08-29 21:04:38 +0100 (Fri, 29 Aug 2008) $

Author:

Craig R. McClanahan

Field Summary

protected Object	defaultValue Deprecated. The default value specified to our Constructor, if any.
static Object	NO_DEFAULT Deprecated. This is a special reference that can be passed as the "default object" to the constructor to indicate that no default is desired.
protected static String[]	strings Deprecated. Model object for string arrays.
protected boolean	useDefault Deprecated. Should we return the default value on conversion errors?

Constructor Summary

AbstractArrayConverter()
Deprecated. Create a Converter that will throw a ConversionException if a conversion error occurs.

AbstractArrayConverter(Object defaultValue)
Deprecated. Create a Converter that will return the specified default value if a conversion error occurs.

Method Summary

abstract Object	convert(Class type, Object value) Deprecated. Convert the specified input object into an output object of the specified type.
protected List	parseElements(String svalue) Deprecated. Parse an incoming String of the form similar to an array initializer in the Java language into a List individual Strings for each element, according to the following rules.

Methods inherited from class java.lang.Object

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

Field Detail

NO_DEFAULT

public static final Object NO_DEFAULT

Deprecated.

This is a special reference that can be passed as the "default object" to the constructor to indicate that no default is desired. Note that the value 'null' cannot be used for this purpose, as the caller may want a null to be returned as the default.

Since:

1.8.0

strings

protected static String[] strings

Deprecated.

Model object for string arrays.

defaultValue

protected Object defaultValue

Deprecated.

The default value specified to our Constructor, if any.

useDefault

protected boolean useDefault

Deprecated.

Should we return the default value on conversion errors?

Constructor Detail

AbstractArrayConverter

public AbstractArrayConverter()

Deprecated.

Create a Converter that will throw a ConversionException if a conversion error occurs.

AbstractArrayConverter

public AbstractArrayConverter(Object defaultValue)

Deprecated.

Create a Converter that will return the specified default value if a conversion error occurs.

Parameters:

defaultValue - The default value to be returned

Since:

1.8.0

Method Detail

convert

public abstract Object convert(Class type,
                               Object value)

Deprecated.

Convert the specified input object into an output object of the specified type. This method must be implemented by a concrete subclass.

Specified by:

convert in interface Converter

Parameters:

type - Data type to which this value should be converted

value - The input value to be converted

Returns:

The converted value

Throws:

ConversionException - if conversion cannot be performed successfully

parseElements

protected List parseElements(String svalue)

Deprecated.

Parse an incoming String of the form similar to an array initializer in the Java language into a List individual Strings for each element, according to the following rules.

• The string is expected to be a comma-separated list of values.
• The string may optionally have matching '{' and '}' delimiters around the list.
• Whitespace before and after each element is stripped.
• Elements in the list may be delimited by single or double quotes. Within a quoted elements, the normal Java escape sequences are valid.

Parameters:

svalue - String value to be parsed

Returns:

The parsed list of String values

Throws:

ConversionException - if the syntax of svalue is not syntactically valid

NullPointerException - if svalue is null