Examples of groovy.lang.Closure

groovy.lang.Closure
Represents any closure object in Groovy.
Groovy allows instances of Closures to be called in a short form. For example:
```
 def a = 1 def c = {a} assert c() == 1 
```
To be able to use a Closure in this way with your own subclass, you need to provide a doCall method with any signature you want to. This ensures that {@link #getMaximumNumberOfParameters()} and {@link #getParameterTypes()} will work too without any additional code. If no doCall method is provided a closure must be used in its long form like
```
 def a = 1 def c = {a} assert c.call() == 1 
```
@author James Strachan @author John Wilson @author Jochen Theodorou @author Graeme Rocher @author Paul King @version $Revision: 22366 $


    protected void appendNode(final Object newValue, final GPathResult result) {
        if (newValue instanceof Closure) {
            this.children.add(new ReplacementNode() {
                public void build(final GroovyObject builder, final Map namespaceMap, final Map<String, String> namespaceTagHints) {
                    final Closure c = (Closure) ((Closure) newValue).clone();
                    c.setDelegate(builder);
                    c.call(new Object[]{result});
                }
            });
        } else {
            this.children.add(newValue);
        }

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        }
    }


    public void build(final GroovyObject builder, final Map namespaceMap, final Map<String, String> namespaceTagHints) {
        if (this.replacementNodeStack.empty()) {
            final Closure rest = new Closure(null) {
                public Object doCall(final Object o) {
                    buildChildren(builder, namespaceMap, namespaceTagHints);


                    return null;
                }

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    private Object callGlobal(String name, Object[] args) {
        return callGlobal(name, args, context);
    }


    private Object callGlobal(String name, Object[] args, ScriptContext ctx) {
        Closure closure = globalClosures.get(name);
        if (closure != null) {
            return closure.call(args);
        } else {
            // Look for closure valued variable in the 
            // given ScriptContext. If available, call it.
            Object value = ctx.getAttribute(name);
            if (value instanceof Closure) {

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import groovy.lang.Closure;


public class JointJava {
    public void method() {
        Closure closure = new JointGroovy().getProperty().getProperty2().getProperty3();
    }

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        }
        catch (GroovyRuntimeException e) {
            // br should get a "native" property match first. getProperty includes such fall-back logic
            Object value = this.getProperty(name);
            if (value instanceof Closure) {
                Closure closure = (Closure) value;
                closure = (Closure) closure.clone();
                closure.setDelegate(this);
                return closure.call((Object[]) args);
            } else {
                throw e;
            }
        }

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     */
    public String toString() {
        Object method = getProperties().get("toString");
        if (method != null && method instanceof Closure) {
            // invoke overridden toString closure method
            Closure closure = (Closure) method;
            closure.setDelegate(this);
            return closure.call().toString();
        } else {
            return expandoProperties.toString();
        }
    }

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     */
    public boolean equals(Object obj) {
        Object method = getProperties().get("equals");
        if (method != null && method instanceof Closure) {
            // invoke overridden equals closure method
            Closure closure = (Closure) method;
            closure.setDelegate(this);
            Boolean ret = (Boolean) closure.call(obj);
            return ret.booleanValue();
        } else {
            return super.equals(obj);
        }
    }

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     */
    public int hashCode() {
        Object method = getProperties().get("hashCode");
        if (method != null && method instanceof Closure) {
            // invoke overridden hashCode closure method
            Closure closure = (Closure) method;
            closure.setDelegate(this);
            Integer ret = (Integer) closure.call();
            return ret.intValue();
        } else {
            return super.hashCode();
        }
    }

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     *
     * @param statement the statement to configure
     */
    protected void configure(Statement statement) {
        // for thread safety, grab local copy
        Closure configureStatement = this.configureStatement;
        if (configureStatement != null) {
            configureStatement.call(statement);
        }
    }

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            return dispathNodeCall(name, args);
        }
    }


    protected boolean checkExplicitMethod(String methodName, Object args, Reference result) {
        Closure explicitMethod = resolveExplicitMethod(methodName, args);
        if (explicitMethod != null) {
            if (args instanceof Object[]) {
                result.set(explicitMethod.call((Object[]) args));
            } else {
                //todo push through InvokerHelper.asList?
                result.set(explicitMethod.call(args));
            }
            return true;
        } else {
            return false;
        }

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