pl.softech.eav.domain.dsl.RelationDefinitionContext.java Source code

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Here is the source code for pl.softech.eav.domain.dsl.RelationDefinitionContext.java

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/*
 * Copyright 2013 Sawomir led <slawomir.sledz@sof-tech.pl>.
 *
 * 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 pl.softech.eav.domain.dsl;

import java.util.ArrayList;
import java.util.List;

import org.apache.commons.lang3.builder.ToStringBuilder;
import org.apache.commons.lang3.builder.ToStringStyle;

import com.google.common.collect.ImmutableList;
import com.google.common.collect.Lists;

/**
 * @author Sawomir led <slawomir.sledz@sof-tech.pl>
 * @since 1.0
 */
public class RelationDefinitionContext implements Context {

    private final String relationIdentifier;

    private final Context[] childrens;

    public RelationDefinitionContext(Builder builder) {
        this.relationIdentifier = builder.relationIdentifier;
        this.childrens = builder.getChildrens();
    }

    public String getRelationIdentifier() {
        return relationIdentifier;
    }

    public Context[] getChildrens() {
        return childrens;
    }

    @Override
    public void accept(ContextVisitor visitor) {
        visitor.visitOnEnter(this);

        for (Context ctx : childrens) {
            ctx.accept(visitor);
        }

        visitor.visitOnLeave(this);

    }

    @Override
    public String toString() {
        ToStringBuilder sb = new ToStringBuilder(this, ToStringStyle.SHORT_PREFIX_STYLE);
        sb.append("relationIdentifier", relationIdentifier);
        sb.append("childrens", childrens);
        return sb.toString();
    }

    static class Builder implements NamePropertyContextAware<Builder> {

        private String relationIdentifier;

        private final ArrayList<Context> childrens = Lists.newArrayList();

        private NamePropertyContext namePropertyContext;

        @Override
        public Builder withNamePropertyContext(NamePropertyContext namePropertyContext) {
            this.namePropertyContext = namePropertyContext;
            return this;
        }

        public Builder addContext(Context ctx) {
            childrens.add(ctx);
            return this;
        }

        public Builder withRelationIdentifier(String relationIdentifier) {
            this.relationIdentifier = relationIdentifier;
            return this;
        }

        private Context[] toArray(List<Context> arg) {
            return arg.toArray(new Context[arg.size()]);
        }

        Context[] getChildrens() {

            if (namePropertyContext == null) {
                return toArray(childrens);
            }

            return toArray(new ImmutableList.Builder<Context>().addAll(childrens).add(namePropertyContext).build());
        }

    }

}