org.datacleaner.beans.script.JavaScriptUtils Maven / Gradle / Ivy
/**
* DataCleaner (community edition)
* Copyright (C) 2014 Free Software Foundation, Inc.
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* This program 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 distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*/
package org.datacleaner.beans.script;
import org.datacleaner.api.InputColumn;
import org.datacleaner.api.InputRow;
import org.datacleaner.util.ReflectionUtils;
import org.mozilla.javascript.Context;
import org.mozilla.javascript.NativeArray;
import org.mozilla.javascript.Scriptable;
import org.mozilla.javascript.ScriptableObject;
/**
* Various utility methods for dealing with JavaScript (Mozilla Rhino)
*
*
*/
final class JavaScriptUtils {
private JavaScriptUtils() {
// prevent instantiation
}
/**
* Adds an object to the JavaScript scope with a set of variable names
*
* @param scope
* @param object
* @param names
*/
public static void addToScope(final Scriptable scope, final Object object, final String... names) {
final Object jsObject = Context.javaToJS(object, scope);
for (String name : names) {
name = name.replaceAll(" ", "_");
ScriptableObject.putProperty(scope, name, jsObject);
}
}
/**
* Adds the values of a row to the JavaScript scope
*
* @param scope
* @param inputRow
* @param columns
* @param arrayName
*/
public static void addToScope(final Scriptable scope, final InputRow inputRow, final InputColumn[] columns,
final String arrayName) {
final NativeArray values = new NativeArray(columns.length * 2);
for (int i = 0; i < columns.length; i++) {
final InputColumn column = columns[i];
Object value = inputRow.getValue(column);
if (value != null) {
final Class dataType = column.getDataType();
if (ReflectionUtils.isNumber(dataType)) {
value = Context.toNumber(value);
} else if (ReflectionUtils.isBoolean(dataType)) {
value = Context.toBoolean(value);
}
}
values.put(i, values, value);
values.put(column.getName(), values, value);
addToScope(scope, value, column.getName(), column.getName().toLowerCase(), column.getName().toUpperCase());
}
addToScope(scope, values, arrayName);
}
}