com.cloudera.nav.plugin.model.relations.InstanceOfRelation.java Source code

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Here is the source code for com.cloudera.nav.plugin.model.relations.InstanceOfRelation.java

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/*
 * Copyright (c) 2015 Cloudera, 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.cloudera.nav.plugin.model.relations;

import com.cloudera.nav.plugin.model.SourceType;
import com.cloudera.nav.plugin.model.annotations.MClass;
import com.cloudera.nav.plugin.model.entities.Entity;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.Iterables;

import java.util.Collection;
import java.util.Collections;

/**
 * Represents the relationship between an operation template and execution
 */
@MClass
public final class InstanceOfRelation extends Relation {

    public static class Builder<T extends Builder<T>> extends Relation.Builder<T> {

        protected Builder() {
            super(RelationType.INSTANCE_OF);
        }

        @SuppressWarnings("unchecked")
        @Override
        protected T self() {
            return (T) this;
        }

        @Override
        public InstanceOfRelation build() {
            return new InstanceOfRelation(this);
        }

        public T templateId(String templateId) {
            return ep1Ids(Collections.singleton(templateId));
        }

        public T instanceId(String instanceId) {
            return ep2Ids(Collections.singleton(instanceId));
        }

        public T sourceTypeOfTemplate(SourceType sourceType) {
            return ep1SourceType(sourceType);
        }

        public T sourceTypeOfInstance(SourceType sourceType) {
            return ep2SourceType(sourceType);
        }

        public T template(Entity src) {
            return ep1(ImmutableList.of(src));
        }

        public T instance(Entity instance) {
            return instances(Collections.singleton(instance));
        }

        public T instances(Collection<Entity> instance) {
            return ep2(instance);
        }
    }

    @SuppressWarnings("rawtypes")
    public static Builder<?> builder() {
        return new Builder();
    }

    private InstanceOfRelation(Builder<?> builder) {
        super(builder);
    }

    public String getTemplateId() {
        return Iterables.getOnlyElement(getEp1Ids());
    }

    public Collection<String> getInstanceIds() {
        return getEp2Ids();
    }

    public SourceType getSourceTypeOfTemplate() {
        return getEp1SourceType();
    }

    public SourceType getSourceTypeOfInstance() {
        return getEp2SourceType();
    }
}