org.chalup.thneed.PolymorphicRelationship.java Source code

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Here is the source code for org.chalup.thneed.PolymorphicRelationship.java

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/*
 * Copyright (C) 2013 Jerzy Chalupski
 *
 * 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.chalup.thneed;

import com.google.common.base.Objects;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;

public class PolymorphicRelationship<TModel> implements Relationship<TModel> {

    public final TModel mModel;
    public final ImmutableMap<String, TModel> mPolymorphicModels;
    public final String mPolymorphicModelIdColumn;
    public final String mTypeColumnName;
    public final String mIdColumnName;

    PolymorphicRelationship(TModel model, ImmutableList<? extends PolymorphicType<? extends TModel>> types,
            String polymorphicModelIdColumn, String typeColumnName, String idColumnName) {
        mModel = model;
        mPolymorphicModelIdColumn = polymorphicModelIdColumn;
        mTypeColumnName = typeColumnName;
        mIdColumnName = idColumnName;

        ImmutableMap.Builder<String, TModel> builder = ImmutableMap.builder();
        for (PolymorphicType<? extends TModel> type : types) {
            builder.put(type.getModelName(), (TModel) type.self());
        }
        mPolymorphicModels = builder.build();
    }

    @Override
    public void accept(RelationshipVisitor<? super TModel> visitor) {
        visitor.visit(this);
    }

    @Override
    public int hashCode() {
        return Objects.hashCode(mModel, mPolymorphicModels, mPolymorphicModelIdColumn, mTypeColumnName,
                mIdColumnName);
    }

    @Override
    public boolean equals(Object o) {
        if (this == o)
            return true;
        if (o == null || getClass() != o.getClass())
            return false;

        final PolymorphicRelationship other = (PolymorphicRelationship) o;
        return Objects.equal(this.mModel, other.mModel)
                && Objects.equal(this.mPolymorphicModels, other.mPolymorphicModels)
                && Objects.equal(this.mPolymorphicModelIdColumn, other.mPolymorphicModelIdColumn)
                && Objects.equal(this.mTypeColumnName, other.mTypeColumnName)
                && Objects.equal(this.mIdColumnName, other.mIdColumnName);
    }
}