/
IndexColumn.java
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/
IndexColumn.java
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package org.jumpmind.symmetric.core.model;
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
*/
import java.io.Serializable;
/**
* Represents a column of an index in the database model.
*/
public class IndexColumn implements Cloneable, Serializable {
private static final long serialVersionUID = 1L;
/** The position within the owning index. */
private int ordinalPosition;
/** The indexed column. */
private Column column;
/** The name of the column. */
protected String name;
/** The size of the column in the index. */
protected String size;
/**
* Creates a new index column object.
*/
public IndexColumn() {
}
/**
* Creates a new index column object.
*
* @param column
* The indexed column
*/
public IndexColumn(Column column) {
this.column = column;
name = column.getName();
}
/**
* Creates a new index column object.
*
* @param columnName
* The name of the corresponding table column
*/
public IndexColumn(String columnName) {
name = columnName;
}
/**
* Returns the position within the owning index.
*
* @return The position
*/
public int getOrdinalPosition() {
return ordinalPosition;
}
/**
* Sets the position within the owning index. Please note that you should
* not change the value once the column has been added to a index.
*
* @param position
* The position
*/
public void setOrdinalPosition(int position) {
ordinalPosition = position;
}
/**
* Returns the name of the column.
*
* @return The name
*/
public String getName() {
return name;
}
/**
* Sets the name of the column.
*
* @param name
* The name
*/
public void setName(String name) {
this.name = name;
}
/**
* Returns the indexed column.
*
* @return The column
*/
public Column getColumn() {
return column;
}
/**
* Sets the indexed column.
*
* @param column
* The column
*/
public void setColumn(Column column) {
this.column = column;
name = (column == null ? null : column.getName());
}
/**
* Returns the size of the column in the index.
*
* @return The size
*/
public String getSize() {
return size;
}
/**
* Sets the size of the column in the index.
*
* @param size
* The size
*/
public void setSize(String size) {
this.size = size;
}
/**
* {@inheritDoc}
*/
public Object clone() throws CloneNotSupportedException {
IndexColumn result = (IndexColumn) super.clone();
result.name = name;
result.size = size;
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
IndexColumn other = (IndexColumn) obj;
if (name == null) {
if (other.name != null)
return false;
} else if (!name.equals(other.name))
return false;
if (size == null) {
if (other.size != null)
return false;
} else if (!size.equals(other.size))
return false;
return true;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((name == null) ? 0 : name.hashCode());
result = prime * result + ((size == null) ? 0 : size.hashCode());
return result;
}
/**
* {@inheritDoc}
*/
public String toString() {
StringBuffer result = new StringBuffer();
result.append("Index column [name=");
result.append(getName());
result.append("; size=");
result.append(getSize());
result.append("]");
return result.toString();
}
}