com.blackducksoftware.bdio.AnonymousNode.java Source code

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Here is the source code for com.blackducksoftware.bdio.AnonymousNode.java

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/*
 * Copyright 2015 Black Duck Software, 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 com.blackducksoftware.bdio;

import static com.google.common.base.MoreObjects.toStringHelper;

import java.io.Serializable;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Objects;
import java.util.Set;
import java.util.UUID;

import com.google.common.collect.ImmutableSet;

/**
 * An anonymous node, may be needed to serialize additional data. The identifier and type information cannot change,
 * however the data map is mutable and can be modified directly.
 *
 * @author jgustie
 */
public final class AnonymousNode implements Node, Serializable {

    private final String id;

    private final Set<Type> types;

    private final Map<Term, Object> data;

    private AnonymousNode(Type... types) {
        id = "_:N" + UUID.randomUUID().toString().replace("-", "");
        this.types = ImmutableSet.copyOf(types);
        data = new LinkedHashMap<>();
    }

    /**
     * Returns a new mutable anonymous node.
     */
    public static Node create(Type type) {
        return new AnonymousNode(type);
    }

    @Override
    public final String id() {
        return id;
    }

    @Override
    public final Set<Type> types() {
        return types;
    }

    @Override
    public Map<Term, Object> data() {
        return data;
    }

    @Override
    public int hashCode() {
        return Objects.hash(id, types, data);
    }

    @Override
    public boolean equals(Object obj) {
        if (obj instanceof Node) {
            Node other = (Node) obj;
            return id.equals(other.id()) && types.equals(other.types()) && data.equals(other.data());
        } else {
            return false;
        }
    }

    @Override
    public String toString() {
        return toStringHelper(this).add("id", id).add("types", types).add("data", data).toString();
    }
}