Package groovy.lang

Examples of groovy.lang.DelegatingMetaClass

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    public NodeList(int size) {
        super(size);
    }

    private static void setMetaClass(final MetaClass metaClass) {
        final MetaClass newMetaClass = new DelegatingMetaClass(metaClass) {
            /* (non-Javadoc)
            * @see groovy.lang.DelegatingMetaClass#getAttribute(java.lang.Object, java.lang.String)
            */
            public Object getAttribute(final Object object, final String attribute) {
                NodeList nl = (NodeList) object;
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                closures.put(name, new MethodClosure(scriptObject, name));
            }

            globalClosures.putAll(closures);
            final MetaClass oldMetaClass = scriptObject.getMetaClass();
            scriptObject.setMetaClass(new DelegatingMetaClass(oldMetaClass) {
                public Object invokeMethod(Object object, String name, Object args) {
                    if (args == null) {
                        return invokeMethod(object, name, MetaClassHelper.EMPTY_ARRAY);
                    } else if (args instanceof Tuple) {
                        return invokeMethod(object, name, ((Tuple) args).toArray());
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  public static class TestCustomizer implements GroovyObjectCustomizer {

    @Override
    public void customize(GroovyObject goo) {
      DelegatingMetaClass dmc = new DelegatingMetaClass(goo.getMetaClass()) {
        @Override
        public Object invokeMethod(Object arg0, String mName, Object[] arg2) {
          if (mName.contains("Missing")) {
            throw new IllegalStateException("Gotcha");
          }
          else {
            return super.invokeMethod(arg0, mName, arg2);
          }
        }
      };
      dmc.initialize();
      goo.setMetaClass(dmc);
    }
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     * @param nodeClass the class whose metaclass we wish to override (this class or a subclass)
     */
    protected static void setMetaClass(final MetaClass metaClass, Class nodeClass) {
        // TODO Is protected static a bit of a smell?
        // TODO perhaps set nodeClass to be Class<? extends Node>
        final MetaClass newMetaClass = new DelegatingMetaClass(metaClass) {
            @Override
            public Object getAttribute(final Object object, final String attribute) {
                Node n = (Node) object;
                return n.get("@" + attribute);
            }
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        }
        return result;
    }

    protected static void setMetaClass(final Class nodelistClass, final MetaClass metaClass) {
        final MetaClass newMetaClass = new DelegatingMetaClass(metaClass) {
            @Override
            public Object getAttribute(final Object object, final String attribute) {
                NodeList nl = (NodeList) object;
                Iterator it = nl.iterator();
                List result = new ArrayList();
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     *
     * @param metaClass the new MetaClass
     */
    @Override
    public void setMetaClass(final MetaClass metaClass) {
        final MetaClass newMetaClass = new DelegatingMetaClass(metaClass) {
            @Override
            public Object getAttribute(final Object object, final String attribute) {
                return GPathResult.this.getProperty("@" + attribute);
            }

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                /*
                * We override the MetaClass of this script object so that we can
                * forward calls to global closures (of previous or future "eval" calls)
                * This gives the illusion of working on the same "global" scope.
                */
                scriptObject.setMetaClass(new DelegatingMetaClass(oldMetaClass) {
                    @Override
                    public Object invokeMethod(Object object, String name, Object args) {
                        if (args == null) {
                            return invokeMethod(object, name, MetaClassHelper.EMPTY_ARRAY);
                        }
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            this.parent().children().add(child);
        }
    }

    protected static void setMetaClass(final MetaClass metaClass, Class nodeClass) {
        final MetaClass newMetaClass = new DelegatingMetaClass(metaClass) {
            @Override
            public Object getAttribute(final Object object, final String attribute) {
                Node n = (Node) object;
                return n.get("@" + attribute);
            }
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Related Classes of groovy.lang.DelegatingMetaClass

  • com.tinkerpop.gremlin.groovy.jsr223.GremlinGroovyScriptEngine
  • groovy.util.Node
  • groovy.util.NodeList
  • groovy.util.slurpersupport.GPathResult
  • org.codehaus.groovy.jsr223.GroovyScriptEngineImpl
  • org.springframework.scripting.groovy.GroovyScriptFactoryTests$TestCustomizer
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