fr.mby.utils.spring.beans.factory.ProxywiredField.java Source code

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Here is the source code for fr.mby.utils.spring.beans.factory.ProxywiredField.java

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/**
 * Copyright 2013 Maxime Bossard
 *
 * 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 fr.mby.utils.spring.beans.factory;

import java.lang.reflect.Field;

import org.apache.commons.configuration.Configuration;
import org.springframework.beans.factory.config.DependencyDescriptor;
import org.springframework.util.Assert;

import fr.mby.utils.spring.beans.factory.IProxywiredManager.IProxywiredIdentifier;

/**
 * @author Maxime Bossard - 2013
 * 
 */
public class ProxywiredField implements IProxywiredIdentifier {

    /** Configuration key in node path indicating that the node path describe a field. */
    public static String FIELD_CONF_KEY = "__field__";

    /** Path identifying a Proxywired resource. */
    private String nodePath;

    protected ProxywiredField(final DependencyDescriptor descriptor, final String wiredClassName) {
        super();

        Assert.notNull(descriptor, "No DependencyDescriptor provided !");
        final Field field = descriptor.getField();
        Assert.notNull(field, "DependencyDescriptor provided don't describe a Field !");
        final String fieldName = field.getName();

        Assert.hasText(wiredClassName, "Wired class name cannot be found !");

        this.buildNodePath(wiredClassName, fieldName);
    }

    public ProxywiredField(final Class<?> wiredClass, final String fieldName) {
        super();

        Assert.notNull(wiredClass, "No Wired class provided !");
        Assert.hasText(fieldName, "No Field name provided !");

        this.buildNodePath(wiredClass.getName(), fieldName);
    }

    public ProxywiredField(final String nodePath) {
        super();

        Assert.hasText(nodePath, "No nodePath provided !");
        this.nodePath = nodePath;
    }

    /**
     * @param wiredClassName
     * @param fieldName
     */
    protected void buildNodePath(final String wiredClassName, final String fieldName) {
        this.nodePath = wiredClassName + "." + ProxywiredField.FIELD_CONF_KEY + "." + fieldName;
    }

    @Override
    public Configuration getConfigurationSubset(final Configuration allConfiguration) {
        return allConfiguration.subset(this.nodePath);
    }

    @Override
    public String toString() {
        return "ProxywiredField [nodePath=" + this.nodePath + "]";
    }

    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result + ((this.nodePath == null) ? 0 : this.nodePath.hashCode());
        return result;
    }

    @Override
    public boolean equals(final Object obj) {
        if (this == obj) {
            return true;
        }
        if (obj == null) {
            return false;
        }
        if (this.getClass() != obj.getClass()) {
            return false;
        }
        final ProxywiredField other = (ProxywiredField) obj;
        if (this.nodePath == null) {
            if (other.nodePath != null) {
                return false;
            }
        } else if (!this.nodePath.equals(other.nodePath)) {
            return false;
        }
        return true;
    }

}