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// Portions Copyright [2017-2021] [Payara Foundation and/or its affiliates]
package org.glassfish.admingui.common.util;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import jakarta.el.ValueExpression;
import jakarta.faces.context.FacesContext;
import javax.xml.XMLConstants;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import org.w3c.dom.Document;
import org.xml.sax.SAXException;
/**
*
* @author jdlee
*/
public class MiscUtil {
/**
* This utility method can be used to create a ValueExpression and set its value.
* An example usage might look like this:
*
* ValueExpression ve = MiscUtil.setValueExpression("#{myMap}", new HashMap());
*
* @param expression The expression to create. Note that this requires the #{ and } wrappers.
* @param value The value to which to set the ValueExpression
* @return The newly created ValueExpression
*/
public static ValueExpression setValueExpression(String expression, Object value) {
FacesContext facesContext = FacesContext.getCurrentInstance();
ValueExpression ve = facesContext.getApplication().getExpressionFactory().
createValueExpression(facesContext.getELContext(), expression, Object.class);
ve.setValue(facesContext.getELContext(), value);
return ve;
}
public static Document getDocument(String input) {
try {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setValidating(true);
dbf.setFeature(XMLConstants.FEATURE_SECURE_PROCESSING, true);
DocumentBuilder db = dbf.newDocumentBuilder();
Document doc = db.parse(new ByteArrayInputStream(input.getBytes()));
return doc;
} catch (IOException | ParserConfigurationException | SAXException ex) {
GuiUtil.prepareAlert("error", ex.getMessage() + ": " + input, null);
return null;
}
}
}