/**
* Copyright 2011-2017 Asakusa Framework Team.
*
* 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.asakusafw.directio.hive.info;
import java.util.Objects;
import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;
/**
* Represents a Hive column.
* @since 0.8.1
*/
public class ColumnInfo {
private static final String K_NAME = "name";
private static final String K_TYPE = "type";
private static final String K_COMMENT = "comment";
private final String name;
private final FieldType type;
private final String comment;
/**
* Creates a new instance.
* @param name the column name
* @param type the column type
* @param comment the column comment (nullable)
*/
@JsonCreator
public ColumnInfo(
@JsonProperty(value = K_NAME, required = true) String name,
@JsonProperty(value = K_TYPE, required = true) FieldType type,
@JsonProperty(value = K_COMMENT, required = false) String comment) {
this.name = name;
this.type = type;
this.comment = comment;
}
/**
* Creates a new instance.
* @param name the column name
* @param type the column type
*/
public ColumnInfo(String name, FieldType type) {
this(name, type, null);
}
/**
* Returns the column name.
* @return the column name
*/
@JsonProperty(K_NAME)
public String getName() {
return name;
}
/**
* Returns the column type.
* @return the column type
*/
@JsonProperty(K_TYPE)
public FieldType getType() {
return type;
}
/**
* Returns the column comment.
* @return the column comment, or {@code null} if it is not defined
*/
@JsonProperty(K_COMMENT)
public String getComment() {
return comment;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + Objects.hashCode(name);
result = prime * result + Objects.hashCode(type);
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj == null) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
ColumnInfo other = (ColumnInfo) obj;
if (!Objects.equals(name, other.name)) {
return false;
}
if (!Objects.equals(type, other.type)) {
return false;
}
return true;
}
@Override
public String toString() {
return String.format(
"%s:%s", //$NON-NLS-1$
getName(),
getType());
}
}