com.cloudera.nav.sdk.model.custom.MetaClass.java Source code

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Here is the source code for com.cloudera.nav.sdk.model.custom.MetaClass.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.sdk.model.custom;

import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
import com.google.common.base.Preconditions;

import org.apache.commons.lang.StringUtils;

/**
 * Custom metadata model which belongs to either the default Navigator package
 * or to a user-defined custom package. The pair of packageName and name must
 * be unique for a MetaClass
 *
 * New instances should be created via the newClass static factory method so
 * that we can make it harder to miss required properties at compile time
 */
@JsonIgnoreProperties(ignoreUnknown = true)
public class MetaClass extends BaseModelObject {

    public static MetaClass newClass(String packageName, String name) {
        Preconditions.checkArgument(StringUtils.isNotEmpty(packageName));
        Preconditions.checkArgument(StringUtils.isNotEmpty(name));
        MetaClass metaClass = new MetaClass();
        metaClass.setPackageName(packageName);
        metaClass.setName(name);
        return metaClass;
    }

    private String packageName;

    /**
     * The namespace for this model
     */
    public String getPackageName() {
        return packageName;
    }

    public void setPackageName(String packageName) {
        this.packageName = packageName;
    }

    @Override
    public int hashCode() {
        return getNameHashCode() * 31 + getPackageNameHashCode();
    }

    private int getNameHashCode() {
        return getName() == null ? "".hashCode() : getName().hashCode();
    }

    private int getPackageNameHashCode() {
        return getPackageName() == null ? "".hashCode() : getPackageName().hashCode();
    }

    @Override
    public boolean equals(Object other) {
        if (other != null && other instanceof MetaClass) {
            MetaClass o = (MetaClass) other;
            return StringUtils.equals(getName(), o.getName())
                    && StringUtils.equals(getPackageName(), o.getPackageName());
        }
        return false;
    }
}