org.ros.internal.node.service.ServiceDefinition.java Source code

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Here is the source code for org.ros.internal.node.service.ServiceDefinition.java

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/*
 * Copyright (C) 2011 Google Inc.
 * 
 * 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.ros.internal.node.service;

import java.net.URI;
import java.util.Map;

import org.ros.internal.message.new_style.ServiceMessageDefinition;
import org.ros.internal.transport.ConnectionHeaderFields;
import org.ros.namespace.GraphName;

import com.google.common.base.Preconditions;
import com.google.common.collect.ImmutableMap;

/**
 * @author damonkohler@google.com (Damon Kohler)
 */
public class ServiceDefinition {

    private final ServiceIdentifier identifier;
    private final ServiceMessageDefinition definition;

    public ServiceDefinition(ServiceIdentifier identifier, ServiceMessageDefinition definition) {
        Preconditions.checkNotNull(identifier);
        Preconditions.checkNotNull(definition);
        this.identifier = identifier;
        this.definition = definition;
    }

    public Map<String, String> toHeader() {
        return new ImmutableMap.Builder<String, String>().put(ConnectionHeaderFields.SERVICE, getName().toString())
                .putAll(definition.toHeader()).build();
    }

    public String getType() {
        return definition.getType();
    }

    public GraphName getName() {
        return identifier.getName();
    }

    @Override
    public String toString() {
        return "ServiceDefinition<" + getName().toString() + "," + definition.toString() + ">";
    }

    public String getMd5Checksum() {
        return definition.getMd5Checksum();
    }

    public URI getUri() {
        return identifier.getUri();
    }

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

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

}