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package org.apache.tapestry.bean; |
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import java.util.Map; |
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import ognl.ObjectPropertyAccessor; |
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import ognl.OgnlContext; |
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import ognl.OgnlException; |
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import ognl.OgnlRuntime; |
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import ognl.PropertyAccessor; |
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import ognl.enhance.ExpressionCompiler; |
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import ognl.enhance.UnsupportedCompilationException; |
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import org.apache.tapestry.IBeanProvider; |
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public class BeanProviderPropertyAccessor extends ObjectPropertyAccessor implements PropertyAccessor |
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{ |
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public Object getProperty(Map context, Object target, Object name) throws OgnlException |
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{ |
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IBeanProvider provider = (IBeanProvider)target; |
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String beanName = (String)name; |
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if (provider.canProvideBean(beanName)) |
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return provider.getBean(beanName); |
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return super.getProperty(context, target, name); |
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} |
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public boolean hasGetProperty(Map context, Object target, Object oname) throws OgnlException |
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{ |
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IBeanProvider provider = (IBeanProvider)target; |
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String beanName = ((String)oname).replaceAll("\"", ""); |
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if (provider.canProvideBean(beanName)) |
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return true; |
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return super.hasGetProperty(context, target, oname); |
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} |
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public Class getPropertyClass(OgnlContext context, Object target, Object name) |
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{ |
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IBeanProvider provider = (IBeanProvider)target; |
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String beanName = ((String)name).replaceAll("\"", ""); |
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if (provider.canProvideBean(beanName)) |
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return provider.getBean(beanName).getClass(); |
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return super.getPropertyClass(context, target, name); |
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} |
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public String getSourceAccessor(OgnlContext context, Object target, Object name) |
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{ |
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IBeanProvider provider = (IBeanProvider)target; |
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String beanName = ((String)name).replaceAll("\"", ""); |
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if (provider.canProvideBean(beanName)) { |
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Class type = OgnlRuntime.getCompiler().getInterfaceClass(provider.getBean(beanName).getClass()); |
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ExpressionCompiler.addCastString(context, "((" + type.getName() + ")"); |
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context.setCurrentAccessor(IBeanProvider.class); |
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context.setCurrentType(type); |
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return ".getBean(" + name + "))"; |
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} |
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return super.getSourceAccessor(context, target, name); |
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} |
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public String getSourceSetter(OgnlContext context, Object target, Object name) |
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{ |
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throw new UnsupportedCompilationException("Can't set beans on IBeanProvider."); |
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} |
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} |