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ParseNumberTag.javaAPI DocGlassfish v2 API6634Sat May 05 19:17:56 BST 2007org.apache.taglibs.standard.tag.el.fmt

ParseNumberTag

public class ParseNumberTag extends org.apache.taglibs.standard.tag.common.fmt.ParseNumberSupport

A handler for <parseNumber> that accepts attributes as Strings and evaluates them as expressions at runtime.

author
Jan Luehe

Fields Summary
private String
value_
private String
type_
private String
pattern_
private String
parseLocale_
private String
integerOnly_
Constructors Summary
public ParseNumberTag()
Constructs a new ParseNumberTag. As with TagSupport, subclasses should not provide other constructors and are expected to call the superclass constructor

        super();
        init();
    
Methods Summary
public intdoStartTag()


        // evaluate any expressions we were passed, once per invocation
        evaluateExpressions();

	// chain to the parent implementation
	return super.doStartTag();
    
private voidevaluateExpressions()

	Object obj = null;

        /* 
         * Note: we don't check for type mismatches here; we assume
         * the expression evaluator will return the expected type
         * (by virtue of knowledge we give it about what that type is).
         * A ClassCastException here is truly unexpected, so we let it
         * propagate up.
         */

	// 'value' attribute
	if (value_ != null) {
	    value = (String) ExpressionEvaluatorManager.evaluate(
	        "value", value_, String.class, this, pageContext);
	}

	// 'type' attribute
	if (type_ != null) {
	    type = (String) ExpressionEvaluatorManager.evaluate(
	        "type", type_, String.class, this, pageContext);
	}

	// 'pattern' attribute
	if (pattern_ != null) {
	    pattern = (String) ExpressionEvaluatorManager.evaluate(
	        "pattern", pattern_, String.class, this, pageContext);
	}

	// 'parseLocale' attribute
	if (parseLocale_ != null) {
	    obj = ExpressionEvaluatorManager.evaluate(
	        "parseLocale", parseLocale_, Object.class, this, pageContext);
	    if (obj != null) {
		if (obj instanceof Locale) {
		    parseLocale = (Locale) obj;
		} else {
		    String localeStr = (String) obj;
		    if (!"".equals(localeStr)) {
			parseLocale = SetLocaleSupport.parseLocale(localeStr);
		    }
		}
	    }
	}

	// 'integerOnly' attribute
	if (integerOnly_ != null) {
	    obj = ExpressionEvaluatorManager.evaluate(
	        "integerOnly", integerOnly_, Boolean.class, this, pageContext);
	    if (obj != null) {
		isIntegerOnly = ((Boolean) obj).booleanValue();
	    }
	}
    
private voidinit()

        // null implies "no expression"
	value_ = type_ = pattern_ = parseLocale_ = integerOnly_ = null;
    
public voidrelease()

        super.release();
        init();
    
public voidsetIntegerOnly(java.lang.String integerOnly_)

        this.integerOnly_ = integerOnly_;
	this.integerOnlySpecified = true;
    
public voidsetParseLocale(java.lang.String parseLocale_)

        this.parseLocale_ = parseLocale_;
    
public voidsetPattern(java.lang.String pattern_)

        this.pattern_ = pattern_;
    
public voidsetType(java.lang.String type_)

        this.type_ = type_;
    
public voidsetValue(java.lang.String value_)

        this.value_ = value_;
	this.valueSpecified = true;