at.ac.univie.isc.asio.engine.CommandBuilder.java Source code

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Here is the source code for at.ac.univie.isc.asio.engine.CommandBuilder.java

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/*
 * #%L
 * asio server
 * %%
 * Copyright (C) 2013 - 2015 Research Group Scientific Computing, University of Vienna
 * %%
 * 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.
 * #L%
 */
package at.ac.univie.isc.asio.engine;

import at.ac.univie.isc.asio.Id;
import at.ac.univie.isc.asio.Language;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableListMultimap;

import javax.ws.rs.core.MediaType;
import java.security.Principal;

/**
 * Construct {@link Command} instances.
 */
public final class CommandBuilder {

    /**
     * Start building a command from an empty initial state.
     */
    public static CommandBuilder empty() {
        return new CommandBuilder();
    }

    private final ImmutableListMultimap.Builder<String, String> arguments;
    private final ImmutableList.Builder<MediaType> accepted;
    private Principal owner;

    private CommandBuilder() {
        accepted = ImmutableList.builder();
        arguments = ImmutableListMultimap.builder();
    }

    public CommandBuilder single(final String key, final String value) {
        arguments.put(key, value);
        return this;
    }

    public CommandBuilder accept(final MediaType type) {
        accepted.add(type);
        return this;
    }

    public CommandBuilder owner(final Principal owner) {
        this.owner = owner;
        return this;
    }

    public CommandBuilder language(final Language language) {
        arguments.put(Command.KEY_LANGUAGE, language.name());
        return this;
    }

    public CommandBuilder target(final Id target) {
        arguments.put(Command.KEY_SCHEMA, target.asString());
        return this;
    }

    public Command build() {
        return Command.create(arguments.build(), accepted.build(), owner);
    }
}