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package org.apache.tapestry.script; |
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import org.apache.hivemind.ClassResolver; |
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import org.apache.hivemind.HiveMind; |
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import org.apache.tapestry.Tapestry; |
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import org.apache.tapestry.util.xml.BaseRule; |
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import org.apache.tapestry.util.xml.DocumentParseException; |
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import org.apache.tapestry.util.xml.RuleDirectedParser; |
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import org.xml.sax.Attributes; |
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class InputSymbolRule extends BaseRule |
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{ |
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private ClassResolver _resolver; |
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public InputSymbolRule(ClassResolver resolver) |
38 | 0 | { |
39 | 0 | _resolver = resolver; |
40 | 0 | } |
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public void startElement(RuleDirectedParser parser, Attributes attributes) |
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{ |
44 | 0 | String key = getAttribute(attributes, "key"); |
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|
46 | 0 | parser.validate(key, Tapestry.SIMPLE_PROPERTY_NAME_PATTERN, |
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"ScriptParser.invalid-key"); |
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49 | 0 | String className = getAttribute(attributes, "class"); |
50 | 0 | Class expectedClass = lookupClass(parser, className); |
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52 | 0 | String required = getAttribute(attributes, "required"); |
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54 | 0 | InputSymbolToken token = new InputSymbolToken(key, expectedClass, |
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required.equals("yes"), parser.getLocation()); |
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57 | 0 | IScriptToken parent = (IScriptToken) parser.peek(); |
58 | 0 | parent.addToken(token); |
59 | 0 | } |
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private Class lookupClass(RuleDirectedParser parser, String className) |
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{ |
63 | 0 | if (HiveMind.isBlank(className)) return null; |
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try |
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{ |
67 | 0 | return _resolver.findClass(className); |
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} |
69 | 0 | catch (Exception ex) |
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{ |
71 | 0 | throw new DocumentParseException(Tapestry.format( |
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"ScriptParser.unable-to-resolve-class", className), parser |
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.getLocation(), ex); |
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} |
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} |
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} |