/*
    * Copyright (C) 2007-2012 Argeo GmbH
    *
    * 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 org.argeo.slc.diff;
  
  import org.argeo.slc.UnsupportedException;
  
  /**
   * A diff position within a table structure such a CSV file or an SQL result
   * set.
   */
  public class TableDiffPosition extends DiffPosition {
  	private Integer line;
  	/** Can be null */
  	private Integer column;
  	/** Can be null */
  	private String columnName;
  
  	public TableDiffPosition(RelatedFile relatedFile, Integer line,
  			Integer column, String columnName) {
  		super(relatedFile);
  		this.line = line;
  		this.column = column;
  		this.columnName = columnName;
  	}
  
  	@SuppressWarnings("unused")
  	private TableDiffPosition() {
  	}
  
  	public Integer getLine() {
  		return line;
  	}
  
  	public Integer getColumn() {
  		return column;
  	}
  
  	public String getColumnName() {
  		return columnName;
  	}
  
  	public int compareTo(DiffPosition dp) {
  		if (!(dp instanceof TableDiffPosition))
  			throw new UnsupportedException("position", dp);
  
  		TableDiffPosition o = (TableDiffPosition) dp;
  		if (relatedFile.equals(o.relatedFile)) {
  			if (line == o.line) {
  				return column.compareTo(o.column);
  			} else {
  				return line.compareTo(o.line);
  			}
  		} else {
  			return relatedFile.compareTo(o.relatedFile);
  		}
  	}
  
  	@Override
  	public String toString() {
  		StringBuffer buf = new StringBuffer("");
  		buf.append(relatedFile).append('[').append(line);
  		if (column != null) {
  			buf.append(',').append(column);
  			if (columnName != null) {
  				buf.append('-').append(columnName);
  			}
  		}
  		buf.append(']');
  		return buf.toString();
  	}
  
  	// Hibernate
  	@SuppressWarnings("unused")
  	private void setLine(Integer line) {
  		this.line = line;
  	}
  
  	@SuppressWarnings("unused")
  	private void setColumn(Integer column) {
  		this.column = column;
  	}
  
  	@SuppressWarnings("unused")
  	private void setColumnName(String columnName) {
  		this.columnName = columnName;
  	}
 
 }