org.simplity.tp.DropIntoMessageBox Maven / Gradle / Ivy
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/*
* Copyright (c) 2017 simplity.org
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package org.simplity.tp;
import org.simplity.kernel.ApplicationError;
import org.simplity.kernel.comp.ValidationContext;
import org.simplity.kernel.expr.Expression;
import org.simplity.kernel.expr.InvalidOperationException;
import org.simplity.kernel.value.Value;
import org.simplity.service.ServiceContext;
/**
* set message in the message box
*
* @author simplity.org
*
*/
public class DropIntoMessageBox extends Action {
/**
* field/table names to be logged
*/
String fieldName;
Expression expression;
@Override
protected Value doAct(ServiceContext ctx) {
String val = null;
if (this.fieldName != null) {
val = ctx.getTextValue(this.fieldName);
}else if(this.expression != null){
try {
val = this.expression.evaluate(ctx).toString();
} catch (InvalidOperationException e) {
throw new ApplicationError("Error while evaluating expression " + this.expression.toString());
}
}
ctx.putMessageInBox(val);
return null;
}
/* (non-Javadoc)
* @see org.simplity.tp.Action#validate(org.simplity.kernel.comp.ValidationContext, org.simplity.tp.Service)
*/
@Override
public int validate(ValidationContext vtx, Service service) {
int count = super.validate(vtx, service);
if(this.fieldName == null ){
if(this.expression == null){
vtx.addError("fieldName is required for dropIntoMessageBox action");
count++;
}
}else if(this.expression != null){
vtx.addError("Specify either fieldName, or expression, but not both for a dropIntoMessageBox action");
count++;
}
return count;
}
}