org.usergrid.utils.ClassUtils.java Source code

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Here is the source code for org.usergrid.utils.ClassUtils.java

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/*******************************************************************************
 * Copyright 2012 Apigee Corporation
 * 
 * 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.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/
package org.usergrid.utils;

import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;

public class ClassUtils extends org.apache.commons.lang.ClassUtils {

    @SuppressWarnings("unchecked")
    public static <A> Class<A> tryGetClass(Class<A> baseCls, String className) {

        try {
            Class<A> cls = (Class<A>) Class.forName(className);
            if (cls != null) {
                return cls;
            }
        } catch (ClassCastException e) {
            // logger.warn("Unable to convert to a typed entity (" + entityType
            // + "): " + e.getMessage());
        } catch (ClassNotFoundException e) {
            // logger.warn("Unable to convert to a typed entity (" + entityType
            // + "): " + e.getMessage());
        }

        return null;

    }

    @SuppressWarnings("unchecked")
    public static <A, B> B cast(A a) {
        return (B) a;
    }

    @SuppressWarnings("unchecked")
    private static final Set<Class<?>> WRAPPER_TYPES = new HashSet<Class<?>>(
            Arrays.asList(Boolean.class, Byte.class, Character.class, Double.class, Float.class, Integer.class,
                    Long.class, Short.class, Void.class));

    public static boolean isWrapperType(Class<?> clazz) {
        return WRAPPER_TYPES.contains(clazz);
    }

    public static boolean isWrapperType2(Class<?> clazz) {
        if (clazz == null) {
            return false;
        }
        return clazz.equals(Boolean.class) || clazz.equals(Integer.class) || clazz.equals(Character.class)
                || clazz.equals(Byte.class) || clazz.equals(Short.class) || clazz.equals(Double.class)
                || clazz.equals(Long.class) || clazz.equals(Float.class);
    }

    public static boolean isPrimitiveType(Class<?> clazz) {
        if (clazz == null) {
            return false;
        }
        return clazz.isPrimitive() || isWrapperType(clazz);
    }

    public static boolean isBasicType(Class<?> clazz) {
        if (clazz == null) {
            return false;
        }
        return (String.class.isAssignableFrom(clazz)) || isPrimitiveType(clazz);
    }

}