1 16 package org.apache.cocoon.woody.datatype.validationruleimpl; 17 18 import org.apache.cocoon.woody.datatype.ValidationRuleBuilder; 19 import org.apache.cocoon.woody.util.DomHelper; 20 import org.apache.cocoon.woody.Constants; 21 import org.apache.cocoon.woody.expression.ExpressionManager; 22 import org.apache.avalon.framework.CascadingException; 23 import org.apache.avalon.framework.activity.Disposable; 24 import org.apache.avalon.framework.service.Serviceable; 25 import org.apache.avalon.framework.service.ServiceManager; 26 import org.apache.avalon.framework.service.ServiceException; 27 import org.apache.excalibur.xml.sax.XMLizable; 28 import org.w3c.dom.Element ; 29 import org.outerj.expression.Expression; 30 import org.outerj.expression.TokenMgrError; 31 32 37 public abstract class AbstractValidationRuleBuilder implements ValidationRuleBuilder, Serviceable, Disposable { 38 protected ExpressionManager expressionManager; 39 protected ServiceManager serviceManager; 40 41 public void service(ServiceManager serviceManager) throws ServiceException { 42 this.serviceManager = serviceManager; 43 this.expressionManager = (ExpressionManager)serviceManager.lookup(ExpressionManager.ROLE); 44 } 45 46 50 protected void buildFailMessage(Element validationRuleElement, AbstractValidationRule rule) { 51 Element failMessageElement = DomHelper.getChildElement(validationRuleElement, Constants.WD_NS, "failmessage"); 52 if (failMessageElement != null) { 53 XMLizable failMessage = DomHelper.compileElementContent(failMessageElement); 54 rule.setFailMessage(failMessage); 55 } 56 } 57 58 61 protected Expression parseExpression(String exprString, Element element, String attrName) throws Exception { 62 try { 63 return expressionManager.parse(exprString); 64 } catch (TokenMgrError e) { 65 throw new CascadingException("Error in expression \"" + exprString + "\" in attribute \"" + attrName + "\" at " + DomHelper.getLocation(element), e); 66 } catch (Exception e) { 67 throw new CascadingException("Error in expression \"" + exprString + "\" in attribute \"" + attrName + "\" at " + DomHelper.getLocation(element), e); 68 } 69 } 70 71 public void dispose() { 72 this.serviceManager.release(this.expressionManager); 73 this.expressionManager = null; 74 this.serviceManager = null; 75 } 76 } 77 | Popular Tags |