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

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Here is the source code for com.cloudera.nav.sdk.model.entities.DatasetField.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.entities;

import com.cloudera.nav.sdk.model.DatasetIdGenerator;
import com.cloudera.nav.sdk.model.annotations.MProperty;
import com.google.common.base.Preconditions;

import org.apache.commons.lang.StringUtils;

public abstract class DatasetField extends SchemaElement {

    @MProperty
    private Integer fieldIndex;
    @MProperty(attribute = "firstClassParentId")
    private String parentId;

    public DatasetField() {
        setEntityType(EntityType.FIELD);
    }

    @Override
    public String generateId() {
        return DatasetIdGenerator.fieldId(getParentId(), getName());
    }

    /**
     * @return if available, the position of the field within its dataset
     */
    public Integer getFieldIndex() {
        return fieldIndex;
    }

    /**
     * @return the id of the parent dataset that contains this field
     */
    public String getParentId() {
        return parentId;
    }

    public void setFieldIndex(Integer fieldIndex) {
        this.fieldIndex = fieldIndex;
    }

    /**
     * Change the id of the parent dataset
     * @param parent the parent dataset entity
     */
    public void setParentId(Entity parent) {
        setParentId(parent.getIdentity());
    }

    /**
     * *
     * @param parentId
     */
    public void setParentId(String parentId) {
        Preconditions.checkArgument(StringUtils.isNotEmpty(parentId),
                "DatasetField parent must have valid identity");
        this.parentId = parentId;
    }
}