/**
* RowIdDisplayTagDecorator.java
* Creation Date: May 16, 2012
*/
package com.kalai;
import java.io.InputStream;
import java.util.Properties;
import org.apache.commons.lang.StringUtils;
import org.apache.log4j.Logger;
import org.displaytag.decorator.TableDecorator;
/**
* RowIdDisplayTagDecorator is an extension of displaytag library's TableDecorator. When DisplayTag table in jsp makes use of this decorator, generates the row id
* appending the columns that are configured on the displaytaguniquecolumns.properties with property key columns and values separated by ~ . <br>
* Examples <br>
* [displaytaguniquecolumns.properties - columns=column1~column2]<br>
* [Lets say the column values for column1 and column2 are col1value and col2value respectively, than the row generated for the table looks like <tr
* id="rowcol1valuecol2value"> ] <br>
* [if configured columns are not evaluated, it generates row id with index <tr id="row0">, <tr id="row1">]
*
* @author (Kalai)
*
*/
public class RowIdDisplayTagDecorator extends TableDecorator
{
private static String[] iUniqueColumns = null;
private static Logger sLogger = Logger.getLogger(RowIdDisplayTagDecorator.class);
/**
* Loads the properties file that has the unique columns that makes a row uniqueness on the html table during inspection of the table
*/
static
{
Properties displayUniqueColumnProperties = new Properties();
try
{
InputStream propertiesFileStream = RowIdDisplayTagDecorator.class.getClassLoader().getResourceAsStream("displaytaguniquecolumns.properties");
displayUniqueColumnProperties.load(propertiesFileStream);
String columnvalues = displayUniqueColumnProperties.getProperty("columns");
if (StringUtils.isNotBlank(columnvalues))
{
iUniqueColumns = columnvalues.split("~");
}
}
catch (Exception exception)
{
sLogger.error(exception.toString());
}
}
@Override
/**
* Adds the row id the the current row object using the columns configured to identify row uniquely to enable html table inspection based on row id
* If no columns configured, it generates id indexed from 0 - size of the table rows
*/
public String addRowId()
{
StringBuilder builder = new StringBuilder("row");
try
{
for (String column : iUniqueColumns)
{
builder.append(evaluate(column).toString());
}
}
catch (Exception exception)
{
sLogger.error(exception.toString());
builder.append(Integer.toString(getListIndex()));
}
return builder.toString();
}
}
* RowIdDisplayTagDecorator.java
* Creation Date: May 16, 2012
*/
package com.kalai;
import java.io.InputStream;
import java.util.Properties;
import org.apache.commons.lang.StringUtils;
import org.apache.log4j.Logger;
import org.displaytag.decorator.TableDecorator;
/**
* RowIdDisplayTagDecorator is an extension of displaytag library's TableDecorator. When DisplayTag table in jsp makes use of this decorator, generates the row id
* appending the columns that are configured on the displaytaguniquecolumns.properties with property key columns and values separated by ~ . <br>
* Examples <br>
* [displaytaguniquecolumns.properties - columns=column1~column2]<br>
* [Lets say the column values for column1 and column2 are col1value and col2value respectively, than the row generated for the table looks like <tr
* id="rowcol1valuecol2value"> ] <br>
* [if configured columns are not evaluated, it generates row id with index <tr id="row0">, <tr id="row1">]
*
* @author (Kalai)
*
*/
public class RowIdDisplayTagDecorator extends TableDecorator
{
private static String[] iUniqueColumns = null;
private static Logger sLogger = Logger.getLogger(RowIdDisplayTagDecorator.class);
/**
* Loads the properties file that has the unique columns that makes a row uniqueness on the html table during inspection of the table
*/
static
{
Properties displayUniqueColumnProperties = new Properties();
try
{
InputStream propertiesFileStream = RowIdDisplayTagDecorator.class.getClassLoader().getResourceAsStream("displaytaguniquecolumns.properties");
displayUniqueColumnProperties.load(propertiesFileStream);
String columnvalues = displayUniqueColumnProperties.getProperty("columns");
if (StringUtils.isNotBlank(columnvalues))
{
iUniqueColumns = columnvalues.split("~");
}
}
catch (Exception exception)
{
sLogger.error(exception.toString());
}
}
@Override
/**
* Adds the row id the the current row object using the columns configured to identify row uniquely to enable html table inspection based on row id
* If no columns configured, it generates id indexed from 0 - size of the table rows
*/
public String addRowId()
{
StringBuilder builder = new StringBuilder("row");
try
{
for (String column : iUniqueColumns)
{
builder.append(evaluate(column).toString());
}
}
catch (Exception exception)
{
sLogger.error(exception.toString());
builder.append(Integer.toString(getListIndex()));
}
return builder.toString();
}
}
