/*
* Copyright 2003-2011 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package jetbrains.mps.smodel.persistence.def;
import jetbrains.mps.smodel.SModelHeader;
import org.jetbrains.mps.openapi.model.SModelReference;
import org.jetbrains.annotations.Nullable;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
import java.io.IOException;
/**
* Indicates failure to read model. Is not specific to 'default' persistence.
*/
public class ModelReadException extends Exception {
@Nullable
private SModelReference myModelReference;
public ModelReadException(String message, @Nullable Throwable throwable, @Nullable SModelReference modelReference) {
super(message, throwable);
myModelReference = modelReference;
}
public ModelReadException(String message, @Nullable Throwable throwable, @Nullable SModelHeader modelHeader) {
super(message, throwable);
myModelReference = modelHeader == null ? null : modelHeader.getModelReference();
}
public ModelReadException(String message, @Nullable Throwable throwable) {
this(message, throwable, (SModelReference) null);
}
@Nullable
public SModelReference getModelReference() {
return myModelReference;
}
public String getMessageEx() {
Throwable cause = getCause();
if (cause instanceof IOException) {
return "Couldn't read model because of I/O error.\n" + cause.getMessage();
} else if (cause instanceof SAXParseException) {
return "Couldn't read model because of invalid XML markup.\n" + cause.getMessage();
} else if (cause instanceof SAXException) {
return "Couldn't read model because of invalid SAX error.\n" + cause.getMessage();
} else if (cause != null) {
return "Couldn't read model.\n" + cause.getMessage();
} else {
return getMessage();
}
}
}