xml.entity.immutableelement.InternalElement.java Source code

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Here is the source code for xml.entity.immutableelement.InternalElement.java

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/*
 * Copyright 2013 Christof Lemke
 *
 * 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 xml.entity.immutableelement;

import javax.annotation.Nonnull;

import xml.entity.select.Selector;

import com.google.common.base.Joiner;
import com.google.common.base.Preconditions;
import com.google.common.collect.FluentIterable;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.Iterables;

class InternalElement extends AbstractElement implements ImmutableElement {
    private final ImmutableList<ImmutableElement> children;

    InternalElement(@Nonnull final String name, @Nonnull final ImmutableList<ImmutableElement> children,
            @Nonnull final Selector selector) {
        super(name, selector);
        Preconditions.checkNotNull(name);
        Preconditions.checkNotNull(children);
        Preconditions.checkNotNull(selector);
        this.children = children;
    }

    @Override
    public String value() {
        return Joiner.on("").join(Iterables.filter(children, ImmutableElements.byName("#text")));
    }

    @Override
    public ImmutableElement child(final String name) {
        final FluentIterable<ImmutableElement> collection = FluentIterable.from(children)
                .filter(ImmutableElements.byName(name));

        return Iterables.getOnlyElement(collection);
    }

    @Override
    @Nonnull
    public ImmutableList<ImmutableElement> children() {
        return children;
    }

    @Override
    public String toString() {
        return name() + children.toString();
    }
}