Examples of org.mvel2.integration.PropertyHandler

org.mvel2.integration.PropertyHandler
This interface allows an external property handler to resolve a property against the provided context. @see org.mvel2.optimizers.impl.asm.ProducesBytecode

      }
    }
  }


  private Object propHandlerByteCode(String property, Object ctx, Class handler) {
    PropertyHandler ph = getPropertyHandler(handler);
    if (ph instanceof ProducesBytecode) {
      assert debug("<<3rd-Party Code Generation>>");
      ((ProducesBytecode) ph).produceBytecodeGet(mv, property, variableFactory);
      return ph.getProperty(property, ctx, variableFactory);
    }
    else {
      throw new RuntimeException("unable to compileShared: custom accessor does not support producing bytecode: "
          + ph.getClass().getName());
    }
  }

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          + ph.getClass().getName());
    }
  }


  private void propHandlerByteCodePut(String property, Object ctx, Class handler, Object value) {
    PropertyHandler ph = getPropertyHandler(handler);
    if (ph instanceof ProducesBytecode) {
      assert debug("<<3rd-Party Code Generation>>");
      ((ProducesBytecode) ph).produceBytecodePut(mv, property, variableFactory);
      ph.setProperty(property, ctx, variableFactory, value);
    }
    else {
      throw new RuntimeException("unable to compileShared: custom accessor does not support producing bytecode: "
          + ph.getClass().getName());
    }
  }

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  public boolean isLiteralOnly() {
    return literal;
  }


  private Object propHandler(String property, Object ctx, Class handler) {
    PropertyHandler ph = getPropertyHandler(handler);
    addAccessorNode(new PropertyHandlerAccessor(property, handler, ph));
    return ph.getProperty(property, ctx, variableFactory);
  }

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    addAccessorNode(new PropertyHandlerAccessor(property, handler, ph));
    return ph.getProperty(property, ctx, variableFactory);
  }


  public void propHandlerSet(String property, Object ctx, Class handler, Object value) {
    PropertyHandler ph = getPropertyHandler(handler);
    addAccessorNode(new PropertyHandlerAccessor(property, handler, ph));
    ph.setProperty(property, ctx, variableFactory, value);
  }

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    else {
      cls = null;
    }


    if (hasPropertyHandler(cls)) {
      PropertyHandler prop = getPropertyHandler(cls);
      if (prop instanceof ProducesBytecode) {
        ((ProducesBytecode) prop).produceBytecodeGet(mv, property, variableFactory);
        return prop.getProperty(property, ctx, variableFactory);
      }
      else {
        throw new RuntimeException("unable to compileShared: custom accessor does not support producing bytecode: "
            + prop.getClass().getName());
      }
    }


    Member member = cls != null ? getFieldOrAccessor(cls, property) : null;

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      }
    }
  }


  private Object propHandlerByteCode(String property, Object ctx, Class handler) {
    PropertyHandler ph = getPropertyHandler(handler);
    if (ph instanceof ProducesBytecode) {
      assert debug("<<3rd-Party Code Generation>>");
      ((ProducesBytecode) ph).produceBytecodeGet(mv, property, variableFactory);
      return ph.getProperty(property, ctx, variableFactory);
    }
    else {
      throw new RuntimeException("unable to compileShared: custom accessor does not support producing bytecode: "
          + ph.getClass().getName());
    }
  }

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          + ph.getClass().getName());
    }
  }


  private void propHandlerByteCodePut(String property, Object ctx, Class handler, Object value) {
    PropertyHandler ph = getPropertyHandler(handler);
    if (ph instanceof ProducesBytecode) {
      assert debug("<<3rd-Party Code Generation>>");
      ((ProducesBytecode) ph).produceBytecodePut(mv, property, variableFactory);
      ph.setProperty(property, ctx, variableFactory, value);
    }
    else {
      throw new RuntimeException("unable to compileShared: custom accessor does not support producing bytecode: "
          + ph.getClass().getName());
    }
  }

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        // Set pattern offset to the appropriate value
        pattern.setOffset( context.getCurrentPatternOffset() );
        
        // this is needed for Activation patterns, to allow declarations and annotations to be used like field constraints
        if ( ClassObjectType.Activation_ObjectType.isAssignableFrom( pattern.getObjectType() ) ) {
            PropertyHandler handler = PropertyHandlerFactory.getPropertyHandler( AgendaItem.class );
            if ( handler == null ) {
                PropertyHandlerFactoryFixer.getPropertyHandlerClass().put( AgendaItem.class, new ActivationPropertyHandler() );
            }
        }

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        // Set pattern offset to the appropriate value
        pattern.setOffset( context.getCurrentPatternOffset() );
        
        // this is needed for Activation patterns, to allow declarations and annotations to be used like field constraints
        if ( ClassObjectType.Match_ObjectType.isAssignableFrom( pattern.getObjectType() ) ) {
            PropertyHandler handler = PropertyHandlerFactory.getPropertyHandler( AgendaItemImpl.class );
            if ( handler == null ) {
                PropertyHandlerFactoryFixer.getPropertyHandlerClass().put( AgendaItemImpl.class, new ActivationPropertyHandler() );
            }
        }

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                                   objectType,
                                   null );
        }


        if ( ClassObjectType.Match_ObjectType.isAssignableFrom( pattern.getObjectType() ) ) {
            PropertyHandler handler = PropertyHandlerFactory.getPropertyHandler( RuleTerminalNodeLeftTuple.class );
            if ( handler == null ) {
                PropertyHandlerFactoryFixer.getPropertyHandlerClass().put( RuleTerminalNodeLeftTuple.class,
                                                                           new ActivationPropertyHandler() );
            }
        }

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