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package com.sun.beans.decoder;

This class is intended to handle <string> element. This element specifies String values. The result value is created from text of the body of this element. For example:
<string>description</string>
is equivalent to "description" in Java code. The value of inner element is calculated before adding to the string using String.valueOf(Object). Note that all characters are used including whitespaces (' ', '\t', '\n', '\r'). So the value of the element
<string><true></string>
is not equal to the value of the element
<string>
    <true>
</string>

The following attribute is supported:

id
the identifier of the variable that is intended to store the result
Author:Sergey A. Malenkov
Since:1.7
/** * This class is intended to handle &lt;string&gt; element. * This element specifies {@link String} values. * The result value is created from text of the body of this element. * For example:<pre> * &lt;string&gt;description&lt;/string&gt;</pre> * is equivalent to {@code "description"} in Java code. * The value of inner element is calculated * before adding to the string using {@link String#valueOf(Object)}. * Note that all characters are used including whitespaces (' ', '\t', '\n', '\r'). * So the value of the element<pre> * &lt;string&gt&lt;true&gt&lt;/string&gt;</pre> * is not equal to the value of the element<pre> * &lt;string&gt; * &lt;true&gt; * &lt;/string&gt;</pre> * <p>The following attribute is supported: * <dl> * <dt>id * <dd>the identifier of the variable that is intended to store the result * </dl> * * @since 1.7 * * @author Sergey A. Malenkov */
public class StringElementHandler extends ElementHandler { private StringBuilder sb = new StringBuilder(); private ValueObject value = ValueObjectImpl.NULL;
Adds the character that contained in this element.
Params:
  • ch – the character
/** * Adds the character that contained in this element. * * @param ch the character */
@Override public final void addCharacter(char ch) { if (this.sb == null) { throw new IllegalStateException("Could not add chararcter to evaluated string element"); } this.sb.append(ch); }
Adds the string value of the argument to the string value of this element.
Params:
  • argument – the value of the element that contained in this one
/** * Adds the string value of the argument to the string value of this element. * * @param argument the value of the element that contained in this one */
@Override protected final void addArgument(Object argument) { if (this.sb == null) { throw new IllegalStateException("Could not add argument to evaluated string element"); } this.sb.append(argument); }
Returns the value of this element.
Returns:the value of this element
/** * Returns the value of this element. * * @return the value of this element */
@Override protected final ValueObject getValueObject() { if (this.sb != null) { try { this.value = ValueObjectImpl.create(getValue(this.sb.toString())); } catch (RuntimeException exception) { getOwner().handleException(exception); } finally { this.sb = null; } } return this.value; }
Returns the text of the body of this element. This method evaluates value from text of the body, and should be overridden in those handlers that extend behavior of this element.
Params:
  • argument – the text of the body
Returns:evaluated value
/** * Returns the text of the body of this element. * This method evaluates value from text of the body, * and should be overridden in those handlers * that extend behavior of this element. * * @param argument the text of the body * @return evaluated value */
protected Object getValue(String argument) { return argument; } }