/**
* The contents of this file are subject to the license and copyright
* detailed in the LICENSE and NOTICE files at the root of the source
* tree and available online at
*
* http://www.dspace.org/license/
*/
package org.dspace.browse;
import org.dspace.core.ConfigurationManager;
/**
* Utility class for retrieving the size of the columns to be used in the browse tables,
* and applying truncation to the strings that will be inserted into the tables.
*
* Can be configured in dspace.cfg, with the following entries:
*
* webui.browse.value_columns.max
* - the maximum number of characters in 'value' columns
* (0 is unlimited)
*
* webui.browse.sort_columns.max
* - the maximum number of characters in 'sort' columns
* (0 is unlimited)
*
* webui.browse.value_columns.omission_mark
* - a string to append to truncated values that will be entered into
* the value columns (ie. '...')
*
* By default, the column sizes are '0' (unlimited), and no truncation is applied,
* EXCEPT for Oracle, where we have to truncate the columns for it to work! (in which
* case, both value and sort columns are by default limited to 2000 characters).
*
* @author Richard Jones
* @author Graham Triggs
*/
public class BrowseDAOUtilsOracle extends BrowseDAOUtilsDefault
{
/**
* Create a new instance of the Oracle specific set of utilities. This
* enforces a limit of 2000 characters on the value and sort columns
* in the database. Any configuration which falls outside this boundary
* will be automatically brought within it.
*
*/
public BrowseDAOUtilsOracle()
{
valueColumnMaxChars = 2000;
sortColumnMaxChars = 2000;
if (ConfigurationManager.getProperty("webui.browse.value_columns.max") != null)
{
valueColumnMaxChars = ConfigurationManager.getIntProperty("webui.browse.value_columns.max");
}
if (ConfigurationManager.getProperty("webui.browse.sort_columns.max") != null)
{
sortColumnMaxChars = ConfigurationManager.getIntProperty("webui.browse.sort_columns.max");
}
// For Oracle, force the sort column to be no more than 2000 characters,
// even if explicitly configured (have to deal with limitation of using VARCHAR2)
if (sortColumnMaxChars < 1 || sortColumnMaxChars > 2000)
{
sortColumnMaxChars = 2000;
}
valueColumnOmissionMark = ConfigurationManager.getProperty("webui.browse.value_columns.omission_mark");
if (valueColumnOmissionMark == null)
{
valueColumnOmissionMark = "...";
}
}
}