package prefuse.data.column;
import java.util.Arrays;
import prefuse.data.DataReadOnlyException;
import prefuse.data.DataTypeException;
/**
* Column implementation for storing int values.
*
* @author <a href="http://jheer.org">jeffrey heer</a>
*/
public class IntColumn extends AbstractColumn {
private int[] m_values;
private int m_size;
/**
* Create a new empty IntColumn.
*/
public IntColumn() {
this(0, 10, -1);
}
/**
* Create a new IntColumn.
* @param nrows the initial size of the column
*/
public IntColumn(int nrows) {
this(nrows, nrows, -1);
}
/**
* Create a new IntColumn.
* @param nrows the initial size of the column
* @param capacity the initial capacity of the column
* @param defaultValue the default value for the column
*/
public IntColumn(int nrows, int capacity, int defaultValue) {
super(int.class, new Integer(defaultValue));
if ( capacity < nrows ) {
throw new IllegalArgumentException(
"Capacity value can not be less than the row count.");
}
m_values = new int[capacity];
Arrays.fill(m_values, defaultValue);
m_size = nrows;
}
// ------------------------------------------------------------------------
// Column Metadata
/**
* @see prefuse.data.column.Column#getRowCount()
*/
public int getRowCount() {
return m_size;
}
/**
* @see prefuse.data.column.Column#setMaximumRow(int)
*/
public void setMaximumRow(int nrows) {
if ( nrows > m_values.length ) {
int capacity = Math.max((3*m_values.length)/2 + 1, nrows);
int[] values = new int[capacity];
System.arraycopy(m_values, 0, values, 0, m_size);
Arrays.fill(values, m_size, capacity,
((Integer)m_defaultValue).intValue());
m_values = values;
}
m_size = nrows;
}
// ------------------------------------------------------------------------
// Data Access Methods
/**
* @see prefuse.data.column.Column#get(int)
*/
public Object get(int row) {
return new Integer(getInt(row));
}
/**
* @see prefuse.data.column.Column#set(java.lang.Object, int)
*/
public void set(Object val, int row) throws DataTypeException {
if ( m_readOnly ) {
throw new DataReadOnlyException();
} else if ( val != null ) {
if ( val instanceof Number ) {
setInt(((Number)val).intValue(), row);
} else if ( val instanceof String ) {
setString((String)val, row);
} else {
throw new DataTypeException(val.getClass());
}
} else {
throw new DataTypeException("Column does not accept null values");
}
}
// ------------------------------------------------------------------------
// Data Type Convenience Methods
/**
* @see prefuse.data.column.AbstractColumn#getInt(int)
*/
public int getInt(int row) throws DataTypeException {
if ( row < 0 || row > m_size ) {
throw new IllegalArgumentException("Row index out of bounds: "+row);
}
return m_values[row];
}
/**
* @see prefuse.data.column.AbstractColumn#setInt(int, int)
*/
public void setInt(int val, int row) throws DataTypeException {
if ( m_readOnly ) {
throw new DataReadOnlyException();
} else if ( row < 0 || row >= m_size) {
throw new IllegalArgumentException("Row index out of bounds: "+row);
}
// get the previous value
int prev = m_values[row];
// exit early if no change
if ( prev == val ) return;
// set the new value
m_values[row] = val;
// fire a change event
fireColumnEvent(row, prev);
}
// /**
// * @see prefuse.data.column.AbstractColumn#getString(int)
// */
// public String getString(int row) throws DataTypeException {
// return String.valueOf(getInt(row));
// }
//
// /**
// * @see prefuse.data.column.AbstractColumn#setString(java.lang.String, int)
// */
// public void setString(String val, int row) throws DataTypeException {
// setInt(Integer.parseInt(val), row);
// }
// ------------------------------------------------------------------------
/**
* @see prefuse.data.column.Column#getLong(int)
*/
public long getLong(int row) throws DataTypeException {
return getInt(row);
}
/**
* @see prefuse.data.column.Column#getFloat(int)
*/
public float getFloat(int row) throws DataTypeException {
return getInt(row);
}
/**
* @see prefuse.data.column.Column#getDouble(int)
*/
public double getDouble(int row) throws DataTypeException {
return getInt(row);
}
} // end of class IntColumn