com.cloudera.nav.sdk.model.entities.UDPChangeSet.java Source code

Introduction

Here is the source code for com.cloudera.nav.sdk.model.entities.UDPChangeSet.java

Source

/*
 * 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.entities;

import com.fasterxml.jackson.annotation.JsonProperty;
import com.google.common.collect.Maps;
import com.google.common.collect.Sets;

import java.util.Collection;
import java.util.Map;
import java.util.Set;

import org.apache.commons.collections.CollectionUtils;
import org.apache.commons.collections.MapUtils;

/**
 * Add, remove, override user-defined properties
 */
public class UDPChangeSet {

    @JsonProperty("add")
    private Map<String, String> newProperties;
    @JsonProperty("del")
    private Set<String> removeProperties;
    @JsonProperty("set")
    private Map<String, String> overrideProperties;

    public UDPChangeSet() {
        newProperties = Maps.newHashMap();
        removeProperties = Sets.newHashSet();
        overrideProperties = null;
    }

    public void reset() {
        newProperties.clear();
        removeProperties.clear();
        overrideProperties = null;
    }

    /**
     * Add specified properties to properties to be added
     * @param properties
     */
    public void addProperties(Map<String, String> properties) {
        if (MapUtils.isNotEmpty(properties)) {
            newProperties.putAll(properties);
            removeProperties.removeAll(properties.keySet());
            if (overrideProperties != null) {
                overrideProperties = Maps
                        .newHashMap(Maps.difference(overrideProperties, properties).entriesOnlyOnLeft());
            }
        }
    }

    /**
     * Add specified properties to properties to be removed
     * @param keys
     */
    public void removeProperties(Collection<String> keys) {
        if (CollectionUtils.isNotEmpty(keys)) {
            removeProperties.addAll(keys);
            for (String k : keys) {
                newProperties.remove(k);
            }
            if (overrideProperties != null) {
                for (String k : keys) {
                    overrideProperties.remove(k);
                }
            }
        }
    }

    /**
     * Replace existing properties with specified properties
     * @param properties
     */
    public void setProperties(Map<String, String> properties) {
        if (properties == null) {
            overrideProperties = null;
        } else {
            removeProperties.removeAll(properties.keySet());
            newProperties = Maps.newHashMap(Maps.difference(newProperties, properties).entriesOnlyOnLeft());
            overrideProperties = Maps.newHashMap(properties);
        }
    }

    public Map<String, String> getNewProperties() {
        return newProperties;
    }

    public void setNewProperties(Map<String, String> newProperties) {
        if (newProperties == null) {
            newProperties = Maps.newHashMap();
        }
        this.newProperties = newProperties;
    }

    public Map<String, String> getOverrideProperties() {
        return overrideProperties;
    }

    public void setOverrideProperties(Map<String, String> overrideProperties) {
        this.overrideProperties = overrideProperties;
    }

    public boolean hasOverrides() {
        return overrideProperties != null;
    }

    public Set<String> getRemoveProperties() {
        return removeProperties;
    }

    public void setRemoveProperties(Set<String> removeProperties) {
        if (removeProperties == null) {
            removeProperties = Sets.newHashSet();
        }
        this.removeProperties = removeProperties;
    }

    public static UDPChangeSet copyOf(UDPChangeSet properties) {
        UDPChangeSet rs = new UDPChangeSet();
        rs.overrideProperties = Maps.newHashMap(properties.getOverrideProperties());
        rs.newProperties = Maps.newHashMap(properties.getNewProperties());
        rs.removeProperties = Sets.newHashSet(properties.getRemoveProperties());
        return rs;
    }
}