How to use

getInstance

method

in

org.apache.commons.collections.functors.InvokerTransformer

/**
 * Gets a Transformer that invokes a method on the input object.
 * The method must have no parameters. If the input object is null, 
 * null is returned.
 * <p>
 * For example, <code>TransformerUtils.invokerTransformer("getName");</code>
 * will call the <code>getName/code> method on the input object to 
 * determine the transformer result.
 * 
 * @see org.apache.commons.collections.functors.InvokerTransformer
 * 
 * @param methodName  the method name to call on the input object, may not be null
 * @return the transformer
 * @throws IllegalArgumentException if the methodName is null.
 */
public static Transformer invokerTransformer(String methodName){
  return InvokerTransformer.getInstance(methodName, null, null);
}

/**
 * Gets a Transformer that invokes a method on the input object.
 * The method parameters are specified. If the input object is null, 
 * null is returned.
 * 
 * @see org.apache.commons.collections.functors.InvokerTransformer
 * 
 * @param methodName  the name of the method
 * @param paramTypes  the parameter types
 * @param args  the arguments
 * @return the transformer
 * @throws IllegalArgumentException if the method name is null
 * @throws IllegalArgumentException if the paramTypes and args don't match
 */
public static Transformer invokerTransformer(String methodName, Class[] paramTypes, Object[] args){
  return InvokerTransformer.getInstance(methodName, paramTypes, args);
}

/**
 * Gets a Transformer that invokes a method on the input object.
 * The method parameters are specified. If the input object is null, 
 * null is returned.
 * 
 * @see org.apache.commons.collections.functors.InvokerTransformer
 * 
 * @param methodName  the name of the method
 * @param paramTypes  the parameter types
 * @param args  the arguments
 * @return the transformer
 * @throws IllegalArgumentException if the method name is null
 * @throws IllegalArgumentException if the paramTypes and args don't match
 */
public static Transformer invokerTransformer(String methodName, Class[] paramTypes, Object[] args){
  return InvokerTransformer.getInstance(methodName, paramTypes, args);
}

/**
 * Gets a Transformer that invokes a method on the input object.
 * The method must have no parameters. If the input object is null, 
 * null is returned.
 * <p>
 * For example, <code>TransformerUtils.invokerTransformer("getName");</code>
 * will call the <code>getName/code> method on the input object to 
 * determine the transformer result.
 * 
 * @see org.apache.commons.collections.functors.InvokerTransformer
 * 
 * @param methodName  the method name to call on the input object, may not be null
 * @return the transformer
 * @throws IllegalArgumentException if the methodName is null.
 */
public static Transformer invokerTransformer(String methodName){
  return InvokerTransformer.getInstance(methodName, null, null);
}

/**
 * Creates a Closure that will invoke a specific method on the closure's
 * input object by reflection.
 *
 * @see org.apache.commons.collections.functors.InvokerTransformer
 * @see org.apache.commons.collections.functors.TransformerClosure
 * 
 * @param methodName  the name of the method
 * @return the <code>invoker</code> closure
 * @throws IllegalArgumentException if the method name is null
 */
public static Closure invokerClosure(String methodName) {
  // reuse transformer as it has caching - this is lazy really, should have inner class here
  return asClosure(InvokerTransformer.getInstance(methodName));
}

/**
 * Creates a Closure that will invoke a specific method on the closure's
 * input object by reflection.
 *
 * @see org.apache.commons.collections.functors.InvokerTransformer
 * @see org.apache.commons.collections.functors.TransformerClosure
 * 
 * @param methodName  the name of the method
 * @param paramTypes  the parameter types
 * @param args  the arguments
 * @return the <code>invoker</code> closure
 * @throws IllegalArgumentException if the method name is null
 * @throws IllegalArgumentException if the paramTypes and args don't match
 */
public static Closure invokerClosure(String methodName, Class[] paramTypes, Object[] args) {
  // reuse transformer as it has caching - this is lazy really, should have inner class here
  return asClosure(InvokerTransformer.getInstance(methodName, paramTypes, args));
}

/**
 * Creates a Predicate that invokes a method on the input object.
 * The method must return either a boolean or a non-null Boolean,
 * and have no parameters. If the input object is null, a 
 * PredicateException is thrown.
 * <p>
 * For example, <code>PredicateUtils.invokerPredicate("isEmpty");</code>
 * will call the <code>isEmpty</code> method on the input object to 
 * determine the predicate result.
 * 
 * @see org.apache.commons.collections.functors.InvokerTransformer
 * @see org.apache.commons.collections.functors.TransformerPredicate
 * 
 * @param methodName  the method name to call on the input object, may not be null
 * @return the predicate
 * @throws IllegalArgumentException if the methodName is null.
 */
public static Predicate invokerPredicate(String methodName){
  // reuse transformer as it has caching - this is lazy really, should have inner class here
  return asPredicate(InvokerTransformer.getInstance(methodName));
}

/**
 * Creates a Closure that will invoke a specific method on the closure's
 * input object by reflection.
 *
 * @see org.apache.commons.collections.functors.InvokerTransformer
 * @see org.apache.commons.collections.functors.TransformerClosure
 * 
 * @param methodName  the name of the method
 * @return the <code>invoker</code> closure
 * @throws IllegalArgumentException if the method name is null
 */
public static Closure invokerClosure(String methodName) {
  // reuse transformer as it has caching - this is lazy really, should have inner class here
  return asClosure(InvokerTransformer.getInstance(methodName));
}

/**
 * Creates a Closure that will invoke a specific method on the closure's
 * input object by reflection.
 *
 * @see org.apache.commons.collections.functors.InvokerTransformer
 * @see org.apache.commons.collections.functors.TransformerClosure
 * 
 * @param methodName  the name of the method
 * @param paramTypes  the parameter types
 * @param args  the arguments
 * @return the <code>invoker</code> closure
 * @throws IllegalArgumentException if the method name is null
 * @throws IllegalArgumentException if the paramTypes and args don't match
 */
public static Closure invokerClosure(String methodName, Class[] paramTypes, Object[] args) {
  // reuse transformer as it has caching - this is lazy really, should have inner class here
  return asClosure(InvokerTransformer.getInstance(methodName, paramTypes, args));
}

/**
 * Creates a Predicate that invokes a method on the input object.
 * The method must return either a boolean or a non-null Boolean,
 * and have no parameters. If the input object is null, a 
 * PredicateException is thrown.
 * <p>
 * For example, <code>PredicateUtils.invokerPredicate("isEmpty");</code>
 * will call the <code>isEmpty</code> method on the input object to 
 * determine the predicate result.
 * 
 * @see org.apache.commons.collections.functors.InvokerTransformer
 * @see org.apache.commons.collections.functors.TransformerPredicate
 * 
 * @param methodName  the method name to call on the input object, may not be null
 * @return the predicate
 * @throws IllegalArgumentException if the methodName is null.
 */
public static Predicate invokerPredicate(String methodName){
  // reuse transformer as it has caching - this is lazy really, should have inner class here
  return asPredicate(InvokerTransformer.getInstance(methodName));
}

/**
 * Creates a Predicate that invokes a method on the input object.
 * The method must return either a boolean or a non-null Boolean,
 * and have no parameters. If the input object is null, a 
 * PredicateException is thrown.
 * <p>
 * For example, <code>PredicateUtils.invokerPredicate("isEmpty");</code>
 * will call the <code>isEmpty</code> method on the input object to 
 * determine the predicate result.
 * 
 * @see org.apache.commons.collections.functors.InvokerTransformer
 * @see org.apache.commons.collections.functors.TransformerPredicate
 * 
 * @param methodName  the method name to call on the input object, may not be null
 * @param paramTypes  the parameter types
 * @param args  the arguments
 * @return the predicate
 * @throws IllegalArgumentException if the method name is null
 * @throws IllegalArgumentException if the paramTypes and args don't match
 */
public static Predicate invokerPredicate(String methodName, Class[] paramTypes, Object[] args){
  // reuse transformer as it has caching - this is lazy really, should have inner class here
  return asPredicate(InvokerTransformer.getInstance(methodName, paramTypes, args));
}

/**
 * Creates a Predicate that invokes a method on the input object.
 * The method must return either a boolean or a non-null Boolean,
 * and have no parameters. If the input object is null, a 
 * PredicateException is thrown.
 * <p>
 * For example, <code>PredicateUtils.invokerPredicate("isEmpty");</code>
 * will call the <code>isEmpty</code> method on the input object to 
 * determine the predicate result.
 * 
 * @see org.apache.commons.collections.functors.InvokerTransformer
 * @see org.apache.commons.collections.functors.TransformerPredicate
 * 
 * @param methodName  the method name to call on the input object, may not be null
 * @param paramTypes  the parameter types
 * @param args  the arguments
 * @return the predicate
 * @throws IllegalArgumentException if the method name is null
 * @throws IllegalArgumentException if the paramTypes and args don't match
 */
public static Predicate invokerPredicate(String methodName, Class[] paramTypes, Object[] args){
  // reuse transformer as it has caching - this is lazy really, should have inner class here
  return asPredicate(InvokerTransformer.getInstance(methodName, paramTypes, args));
}

/**
 * Gets a Transformer that invokes a method on the input object.
 * The method parameters are specified. If the input object is null, 
 * null is returned.
 * 
 * @see org.apache.commons.collections.functors.InvokerTransformer
 * 
 * @param methodName  the name of the method
 * @param paramTypes  the parameter types
 * @param args  the arguments
 * @return the transformer
 * @throws IllegalArgumentException if the method name is null
 * @throws IllegalArgumentException if the paramTypes and args don't match
 */
public static Transformer invokerTransformer(String methodName, Class[] paramTypes, Object[] args){
  return InvokerTransformer.getInstance(methodName, paramTypes, args);
}

/**
 * Gets a Transformer that invokes a method on the input object.
 * The method must have no parameters. If the input object is null, 
 * null is returned.
 * <p>
 * For example, <code>TransformerUtils.invokerTransformer("getName");</code>
 * will call the <code>getName/code> method on the input object to 
 * determine the transformer result.
 * 
 * @see org.apache.commons.collections.functors.InvokerTransformer
 * 
 * @param methodName  the method name to call on the input object, may not be null
 * @return the transformer
 * @throws IllegalArgumentException if the methodName is null.
 */
public static Transformer invokerTransformer(String methodName){
  return InvokerTransformer.getInstance(methodName, null, null);
}

/**
 * Creates a Closure that will invoke a specific method on the closure's
 * input object by reflection.
 *
 * @see org.apache.commons.collections.functors.InvokerTransformer
 * @see org.apache.commons.collections.functors.TransformerClosure
 * 
 * @param methodName  the name of the method
 * @return the <code>invoker</code> closure
 * @throws IllegalArgumentException if the method name is null
 */
public static Closure invokerClosure(String methodName) {
  // reuse transformer as it has caching - this is lazy really, should have inner class here
  return asClosure(InvokerTransformer.getInstance(methodName));
}

/**
 * Creates a Closure that will invoke a specific method on the closure's
 * input object by reflection.
 *
 * @see org.apache.commons.collections.functors.InvokerTransformer
 * @see org.apache.commons.collections.functors.TransformerClosure
 * 
 * @param methodName  the name of the method
 * @return the <code>invoker</code> closure
 * @throws IllegalArgumentException if the method name is null
 */
public static Closure invokerClosure(String methodName) {
  // reuse transformer as it has caching - this is lazy really, should have inner class here
  return asClosure(InvokerTransformer.getInstance(methodName));
}

/**
 * Creates a Closure that will invoke a specific method on the closure's
 * input object by reflection.
 *
 * @see org.apache.commons.collections.functors.InvokerTransformer
 * @see org.apache.commons.collections.functors.TransformerClosure
 * 
 * @param methodName  the name of the method
 * @return the <code>invoker</code> closure
 * @throws IllegalArgumentException if the method name is null
 */
public static Closure invokerClosure(String methodName) {
  // reuse transformer as it has caching - this is lazy really, should have inner class here
  return asClosure(InvokerTransformer.getInstance(methodName));
}

/**
 * Creates a Closure that will invoke a specific method on the closure's
 * input object by reflection.
 *
 * @see org.apache.commons.collections.functors.InvokerTransformer
 * @see org.apache.commons.collections.functors.TransformerClosure
 * 
 * @param methodName  the name of the method
 * @return the <code>invoker</code> closure
 * @throws IllegalArgumentException if the method name is null
 */
public static Closure invokerClosure(String methodName) {
  // reuse transformer as it has caching - this is lazy really, should have inner class here
  return asClosure(InvokerTransformer.getInstance(methodName));
}

/**
 * Creates a Closure that will invoke a specific method on the closure's
 * input object by reflection.
 *
 * @see org.apache.commons.collections.functors.InvokerTransformer
 * @see org.apache.commons.collections.functors.TransformerClosure
 * 
 * @param methodName  the name of the method
 * @return the <code>invoker</code> closure
 * @throws IllegalArgumentException if the method name is null
 */
public static Closure invokerClosure(String methodName) {
  // reuse transformer as it has caching - this is lazy really, should have inner class here
  return asClosure(InvokerTransformer.getInstance(methodName));
}

/**
 * Creates a Closure that will invoke a specific method on the closure's
 * input object by reflection.
 *
 * @see org.apache.commons.collections.functors.InvokerTransformer
 * @see org.apache.commons.collections.functors.TransformerClosure
 * 
 * @param methodName  the name of the method
 * @param paramTypes  the parameter types
 * @param args  the arguments
 * @return the <code>invoker</code> closure
 * @throws IllegalArgumentException if the method name is null
 * @throws IllegalArgumentException if the paramTypes and args don't match
 */
public static Closure invokerClosure(String methodName, Class[] paramTypes, Object[] args) {
  // reuse transformer as it has caching - this is lazy really, should have inner class here
  return asClosure(InvokerTransformer.getInstance(methodName, paramTypes, args));
}