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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)
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| { |
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| _resolver = resolver;
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| } |
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| public void startElement(RuleDirectedParser parser, Attributes attributes)
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| { |
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| String key = getAttribute(attributes, "key");
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| parser.validate(key, Tapestry.SIMPLE_PROPERTY_NAME_PATTERN, "ScriptParser.invalid-key");
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| String className = getAttribute(attributes, "class");
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| Class expectedClass = lookupClass(parser, className);
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| String required = getAttribute(attributes, "required");
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| InputSymbolToken token = new InputSymbolToken(key, expectedClass, required.equals("yes"),
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| parser.getLocation()); |
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| IScriptToken parent = (IScriptToken) parser.peek();
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| parent.addToken(token);
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| } |
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| private Class lookupClass(RuleDirectedParser parser, String className)
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| { |
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| if (HiveMind.isBlank(className))
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| return null;
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| try
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| { |
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| return _resolver.findClass(className);
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| } |
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| catch (Exception ex) |
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| { |
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| throw new DocumentParseException(Tapestry.format(
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| "ScriptParser.unable-to-resolve-class", |
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| className), parser.getLocation(), ex); |
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| } |
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| } |
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| } |