protected Operation transform(DeleteOperation delA, InsertOperation insB) {
int posA = delA.getPosition();
int lenA = delA.getTextLength();
int posB = insB.getPosition();
int lenB = insB.getTextLength();
if (posB >= (posA + lenA)) {
/*
* Operation B is completely after operation A.
*/
return delA;
} else if (posB <= posA) {
/*
* Operation B starts before or at the same position like operation
* A
*/
return new DeleteOperation(posA + lenB, delA.getText());
} else {
/*
* Operation B (insert) is in the range of operation A (delete).
* Operation A' must be split up into two delete operations. (A):
* "123456" (A'): "1" "23456"
*/
DeleteOperation del1 = new DeleteOperation(posA, delA.getText().substring(0, posB - posA));
DeleteOperation del2 =
new DeleteOperation(posA + lenB, delA.getText().substring(posB - posA, lenA));
return new SplitOperation(del1, del2);
}
}
protected Operation transform(InsertOperation insA, DeleteOperation delB) {
int posA = insA.getPosition();
int posB = delB.getPosition();
int lenB = delB.getTextLength();
if (posA <= posB) {
/*
* Operation A starts before or at the same position like operation
*/
return insA;
} else if (posA > (posB + lenB)) {
/*
* Operation A starts after operation B. Index of operation A' must
* be reduced by the length of the text of operation B.
*/
return new InsertOperation(posA - lenB, insA.getText(), insA.getOrigin());
} else {
/*
* Operation A starts in operation B. Index of A' must be the index
* of operation B.
*/
return new InsertOperation(posB, insA.getText(), insA.getOrigin());
}
}
@Override
public JsonObject visit(InsertOperation operation) throws Throwable {
MobileServiceJsonTable table = this.getRemoteTable(operation.getTableName());
table.setSystemProperties(EnumSet.allOf(MobileServiceSystemProperty.class));
JsonObject item = removeSystemProperties(this.mItem);
ListenableFuture<JsonObject> future = table.insert(item);
try {
return future.get();
} catch (ExecutionException ex) {
throw ex.getCause();
}
}
protected Operation transform(
InsertOperation insA, InsertOperation insB, boolean isTransformPrivileged) {
int posA = insA.getPosition();
int posB = insB.getPosition();
int lenB = insB.getTextLength();
if ((posA < posB)
|| ((posA == posB) && (insA.getOrigin() < insB.getOrigin()))
|| ((posA == posB) && (insA.getOrigin() == insB.getOrigin()) && isTransformPrivileged)) {
/*
* Operation A starts before operation B.
*/
return insA;
} else {
/*
* Operation A starts in or behind operation B. Index of operation
* A' must be increased by the length of the text of operation B.
*/
return new InsertOperation(posA + lenB, insA.getText(), insA.getOrigin());
}
}
@Override
public String serializeOperation(Operation operation) throws SerializingMarshallingException {
try {
switch (operation.type()) {
case InsertOperation.TYPE:
{
InsertOperation simpleOperation = (InsertOperation) operation;
List<Object> operationAsList = new ArrayList<>();
operationAsList.add(simpleOperation.getClass().getName());
operationAsList.add(simpleOperation.table());
operationAsList.add(simpleOperation.key());
// TODO
// operationAsList.add( simpleOperation.fields() );
return OBJECT_MAPPER.writeValueAsString(operationAsList);
}
case ReadOperation.TYPE:
{
ReadOperation simpleOperation = (ReadOperation) operation;
List<Object> operationAsList = new ArrayList<>();
operationAsList.add(simpleOperation.getClass().getName());
operationAsList.add(simpleOperation.table());
operationAsList.add(simpleOperation.key());
operationAsList.add(simpleOperation.fields());
return OBJECT_MAPPER.writeValueAsString(operationAsList);
}
case UpdateOperation.TYPE:
{
UpdateOperation simpleOperation = (UpdateOperation) operation;
List<Object> operationAsList = new ArrayList<>();
operationAsList.add(simpleOperation.getClass().getName());
operationAsList.add(simpleOperation.table());
operationAsList.add(simpleOperation.key());
// TODO
// operationAsList.add( simpleOperation.fields() );
return OBJECT_MAPPER.writeValueAsString(operationAsList);
}
case ScanOperation.TYPE:
{
ScanOperation simpleOperation = (ScanOperation) operation;
List<Object> operationAsList = new ArrayList<>();
operationAsList.add(simpleOperation.getClass().getName());
operationAsList.add(simpleOperation.table());
operationAsList.add(simpleOperation.startkey());
operationAsList.add(simpleOperation.recordCount());
operationAsList.add(simpleOperation.fields());
return OBJECT_MAPPER.writeValueAsString(operationAsList);
}
case ReadModifyWriteOperation.TYPE:
{
ReadModifyWriteOperation simpleOperation = (ReadModifyWriteOperation) operation;
List<Object> operationAsList = new ArrayList<>();
operationAsList.add(simpleOperation.getClass().getName());
operationAsList.add(simpleOperation.table());
operationAsList.add(simpleOperation.key());
operationAsList.add(simpleOperation.fields());
// TODO
// operationAsList.add( simpleOperation.values() );
return OBJECT_MAPPER.writeValueAsString(operationAsList);
}
default:
{
throw new SerializingMarshallingException(
format(
"Workload does not know how to serialize operation\nWorkload: %s\nOperation Type: "
+ "%s\nOperation: %s",
getClass().getName(), operation.getClass().getName(), operation));
}
}
} catch (IOException e) {
throw new SerializingMarshallingException(
format("Error serializing operation\n%s", operation), e);
}
}