Example usage for org.apache.commons.collections ClosureUtils chainedClosure

Introduction

In this page you can find the example usage for org.apache.commons.collections ClosureUtils chainedClosure.

Prototype

public static Closure chainedClosure(Collection closures) 

Source Link

Document

Create a new Closure that calls each closure in turn, passing the result into the next closure.

Usage

From source file:gov.nih.nci.caarray.security.SecurityPolicy.java

/**
 * Returns a Closure mutator to be applied to the given property on the given entity, given the set
 * of applicable policies. If multiple Closures are to be applied, then the returned Closure
 * represents a chaining of those Closure. If no Closures are to be applied,
 * returns null/* w ww . ja v  a 2 s .co  m*/
 *
 * @param policies the active policies
 * @param propertyAccessor accessor for the property on the object
 * @return the Closure to be applied, or null if none should be applied
 */
private static Closure getPropertyMutator(Set<SecurityPolicy> policies, PropertyAccessor propAccessor) {
    AttributePolicy attributePolicy = getAttributePolicy(propAccessor);
    if (attributePolicy == null) {
        return null;
    }
    List<Closure> mutators = new ArrayList<Closure>();
    for (AttributeMutator attrMutator : attributePolicy.mutators()) {
        if (policiesMatch(attrMutator.policies(), policies)) {
            try {
                mutators.add(attrMutator.mutator().newInstance());
            } catch (InstantiationException e) {
                LOG.warn("Could not instantiate closure of class " + attrMutator.mutator().getName(), e);
            } catch (IllegalAccessException e) {
                LOG.warn("Could not instantiate closure of class " + attrMutator.mutator().getName(), e);
            }
        }
    }
    return mutators.isEmpty() ? null : ClosureUtils.chainedClosure(mutators);
}

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