/*
- * Copyright 2008 the original author or authors.
- *
+ * Copyright 2005-2010 the original author or authors.
+ *
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
- *
+ *
* http://www.apache.org/licenses/LICENSE-2.0
- *
+ *
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
import java.util.Arrays;
import java.util.List;
-
/**
- * Class that allows configuration of the constructor to use. In
- * particular, it provides:
- * <ul>
- * <li>Selection of a constructor using explicit selection {@link
- * #select(Class...)} or using the most greedy constructor {@link
- * #greedy()}.</li>
- * <li>Selection of methods to invoke to inject other objects into
- * the object.</li>
- * <li>Selection of fields to set.</li>
- * </ul>
+ * Class that allows configuration of the constructor to use. In particular, it
+ * provides:
+ * <ul>
+ * <li>Selection of a constructor using explicit selection
+ * {@link #select(Class...)} or using the most greedy constructor
+ * {@link #greedy()}.</li>
+ * <li>Selection of methods to invoke to inject other objects into the object.</li>
+ * <li>Selection of fields to set.</li>
+ * </ul>
*/
public class ConstructorConfiguration {
- /**
- * DOCUMENT ME!
- */
private Class clazz;
- /**
- * DOCUMENT ME!
- */
private Constructor<?> constructor;
- /**
- * DOCUMENT ME!
- */
private ParameterValues values;
- /**
- * DOCUMENT ME!
- */
private boolean publicOnly;
-/**
- * Constructs the configuration. By default the public constructor with the
- * most arguments will be used.
- * @param aClass Class to construct.
- */
+ /**
+ * Constructs the configuration. By default the public constructor with the
+ * most arguments will be used.
+ *
+ * @param aClass
+ * Class to construct.
+ */
public ConstructorConfiguration(Class aClass) {
- clazz = aClass;
- constructor = null;
- publicOnly = true;
+ clazz = aClass;
+ constructor = null;
+ publicOnly = true;
}
/**
- * Sets whether or no non public constructors are also considered.
- * Reset the choice of a constructor to its default.
- *
+ * Sets whether or no non public constructors are also considered. Reset the
+ * choice of a constructor to its default.
+ *
* @param aNonPublic
- *
+ *
* @return
*/
public ConstructorConfiguration setNonPublic(boolean aNonPublic) {
- publicOnly = !aNonPublic;
- constructor = null;
- values = null;
+ publicOnly = !aNonPublic;
+ constructor = null;
+ values = null;
return this;
}
/**
* Selects an explicit constructor.
- *
+ *
* @return Return the injector to allow call chaining.
- *
- * @throws SystemAssemblyException DOCUMENT ME!
+ *
*/
public ConstructorConfiguration select(Class... aTypes) {
try {
/**
* Selects the greediest constructor.
- *
+ *
* @return The injector to allow call chaining.
- *
- * @throws SystemAssemblyException if the greediest constructor cannot be
- * uniquely identified.
+ *
+ * @throws SystemAssemblyException
+ * if the greediest constructor cannot be uniquely identified.
*/
public ConstructorConfiguration greedy() {
Constructor<?>[] declared = clazz.getDeclaredConstructors();
if (declared.length == 0) {
- throw new SystemAssemblyException("Class '" + clazz
- + " is an interface, primitive type, or array");
+ throw new SystemAssemblyException("Class '" + clazz +
+ " is an interface, primitive type, or array");
}
- int max = -1;
+ int max = -1;
List<Constructor<?>> checked = new ArrayList<Constructor<?>>();
CollectionFilter.filter(Arrays.asList(declared), checked,
new Condition<Constructor<?>>() {
public boolean matches(Constructor<?> aObject) {
if (!publicOnly) {
return true;
- } else {
- return Modifier.isPublic(aObject.getModifiers());
}
+ return Modifier.isPublic(aObject.getModifiers());
}
});
}
}
- final int max2 = max;
- List<Constructor<?>> ctors = checked;
+ final int max2 = max;
+ List<Constructor<?>> ctors = checked;
List<Constructor<?>> longest = new ArrayList<Constructor<?>>();
CollectionFilter.filter(ctors, longest,
new Condition<Constructor<?>>() {
/**
* Creates the object in the given scope.
- *
- * @param aScope Scope containing required interfaces for this object.
- *
+ *
+ * @param aScope
+ * Scope containing required interfaces for this object.
+ *
* @return object.
- *
- * @throws SystemAssemblyException DOCUMENT ME!
+ *
*/
public Object create(Scope aScope) {
Object[] valueArray = values.values(aScope);
try {
return getConstructor().newInstance(valueArray);
} catch (Exception e) {
- throw new SystemAssemblyException("Could not construct object "
- + getConstructor() + " " + Arrays.asList(valueArray), e);
+ throw new SystemAssemblyException("Could not construct object " +
+ getConstructor() + " " + Arrays.asList(valueArray), e);
}
}