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package org.apache.tapestry.engine; |
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import edu.emory.mathcs.backport.java.util.concurrent.ConcurrentHashMap; |
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import org.apache.hivemind.ApplicationRuntimeException; |
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import org.apache.hivemind.ClassResolver; |
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import org.apache.hivemind.Resource; |
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import org.apache.tapestry.IScript; |
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import org.apache.tapestry.Tapestry; |
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import org.apache.tapestry.coerce.ValueConverter; |
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import org.apache.tapestry.event.ReportStatusEvent; |
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import org.apache.tapestry.event.ReportStatusListener; |
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import org.apache.tapestry.event.ResetEventListener; |
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import org.apache.tapestry.script.ScriptParser; |
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import org.apache.tapestry.services.ExpressionEvaluator; |
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import org.apache.tapestry.util.xml.DocumentParseException; |
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import java.util.Map; |
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public class DefaultScriptSource implements IScriptSource, ResetEventListener, ReportStatusListener |
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{ |
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private String _serviceId; |
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private ClassResolver _classResolver; |
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private ExpressionEvaluator _expressionEvaluator; |
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private ValueConverter _valueConverter; |
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private Map _cache = new ConcurrentHashMap(); |
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public void resetEventDidOccur() |
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{ |
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_cache.clear(); |
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} |
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public void reportStatus(ReportStatusEvent event) |
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{ |
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event.title(_serviceId); |
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event.property("parsed script count", _cache.size()); |
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event.collection("parsed scripts", _cache.keySet()); |
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} |
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public IScript getScript(Resource resource) |
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{ |
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IScript result = (IScript) _cache.get(resource); |
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if (result != null) |
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return result; |
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result = parse(resource); |
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_cache.put(resource, result); |
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return result; |
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} |
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private IScript parse(Resource resource) |
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{ |
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ScriptParser parser = new ScriptParser(_classResolver, _expressionEvaluator, _valueConverter); |
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try |
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return parser.parse(resource); |
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} |
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catch (DocumentParseException ex) |
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{ |
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throw new ApplicationRuntimeException(Tapestry.format("DefaultScriptSource.unable-to-parse-script", |
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resource), ex); |
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} |
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} |
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public void setClassResolver(ClassResolver classResolver) |
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{ |
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_classResolver = classResolver; |
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} |
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public void setExpressionEvaluator(ExpressionEvaluator expressionEvaluator) |
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{ |
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_expressionEvaluator = expressionEvaluator; |
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} |
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public void setValueConverter(ValueConverter valueConverter) |
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{ |
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_valueConverter = valueConverter; |
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} |
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public void setServiceId(String serviceId) |
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{ |
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_serviceId = serviceId; |
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} |
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} |