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package org.apache.tapestry.enhance; |
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import java.lang.reflect.Modifier; |
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import org.apache.hivemind.ApplicationRuntimeException; |
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import org.apache.hivemind.Location; |
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import org.apache.hivemind.service.BodyBuilder; |
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import org.apache.hivemind.service.MethodSignature; |
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import org.apache.tapestry.IPage; |
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import org.apache.tapestry.spec.InjectSpecification; |
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public class InjectPageWorker implements InjectEnhancementWorker |
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{ |
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public void performEnhancement(EnhancementOperation op, InjectSpecification spec) |
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{ |
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performEnhancement(op, spec.getObject(), spec.getProperty(), spec.getLocation()); |
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} |
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public void performEnhancement(EnhancementOperation op, String pageName, String propertyName, |
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Location location) |
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{ |
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Class propertyType = op.getPropertyType(propertyName); |
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if (propertyType == null) |
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propertyType = Object.class; |
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else if (propertyType.isPrimitive()) |
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throw new ApplicationRuntimeException(EnhanceMessages.wrongTypeForPageInjection( |
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propertyName, |
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propertyType), null, location, null); |
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op.claimReadonlyProperty(propertyName); |
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MethodSignature sig = new MethodSignature(propertyType, op |
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.getAccessorMethodName(propertyName), null, null); |
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BodyBuilder builder = new BodyBuilder(); |
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builder.add("return "); |
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if (!propertyType.isAssignableFrom(IPage.class)) |
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builder.add("({0})", propertyType.getName()); |
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builder.add("getPage().getRequestCycle().getPage(\"{0}\");", pageName); |
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op.addMethod(Modifier.PUBLIC, sig, builder.toString(), location); |
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} |
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} |