/*
* JBoss, Home of Professional Open Source.
* See the COPYRIGHT.txt file distributed with this work for information
* regarding copyright ownership. Some portions may be licensed
* to Red Hat, Inc. under one or more contributor license agreements.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA.
*/
package org.teiid.metadata;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.TreeMap;
public class ColumnSet<T extends AbstractMetadataRecord> extends AbstractMetadataRecord {
private static final long serialVersionUID = -1185104601468519829L;
private List<Column> columns;
private T parent;
private transient Map<String, Column> columnMap;
public List<Column> getColumns() {
return columns;
}
/**
* Get the {@link Column} via a case-insensitive lookup
* @param name
* @return the {@link Column} or null if it doesn't exist
*/
public Column getColumnByName(String name) {
if (columns == null || name == null) {
return null;
}
Map<String, Column> map = columnMap;
if (map == null) {
map = new TreeMap<String, Column>(String.CASE_INSENSITIVE_ORDER);
for (Column c : columns) {
map.put(c.getName(), c);
}
columnMap = map;
}
return map.get(name);
}
public void addColumn(Column column) {
if (columns == null) {
columns = new ArrayList<Column>();
}
columns.add(column);
Map<String, Column> map = columnMap;
if (map != null) {
map.put(column.getName(), column);
}
}
public void removeColumn(Column column) {
if (columns == null) {
return;
}
columns.remove(column);
Map<String, Column> map = columnMap;
if (map != null) {
map.remove(column.getName());
}
}
public void setColumns(List<Column> columns) {
this.columns = columns;
columnMap = null;
}
@Override
public T getParent() {
return parent;
}
public void setParent(T parent) {
this.parent = parent;
}
}