private DocOp composeOperations(DocOp op1, DocOp op2) throws OperationException {
target = defaultTarget;
int op1Index = 0;
int op2Index = 0;
while (op1Index < op1.size()) {
op1.applyComponent(op1Index++, target);
while (target.isPostTarget()) {
if (op2Index >= op2.size()) {
throw new OperationException(
"Document size mismatch: "
+ "op1 resulting length="
+ DocOpUtil.resultingDocumentLength(op1)
+ ", op2 initial length="
+ DocOpUtil.initialDocumentLength(op2));
}
op2.applyComponent(op2Index++, target);
}
}
if (op2Index < op2.size()) {
target = new FinisherPostTarget();
while (op2Index < op2.size()) {
op2.applyComponent(op2Index++, target);
}
}
flushAnnotations();
return normalizer.finish();
}
/**
* Find the size of a document in number of characters and tags.
*
* @param doc document mutation to find the size
* @return size of the document in number of characters and tags
*/
public static int findDocumentSize(DocOp doc) {
final AtomicInteger size = new AtomicInteger(0);
doc.apply(
new InitializationCursorAdapter(
new DocOpCursor() {
@Override
public void characters(String s) {
size.getAndAdd(s.length());
}
@Override
public void elementStart(String key, Attributes attrs) {
size.incrementAndGet();
}
@Override
public void elementEnd() {
size.incrementAndGet();
}
@Override
public void annotationBoundary(AnnotationBoundaryMap map) {}
@Override
public void retain(int itemCount) {}
@Override
public void deleteCharacters(String chars) {}
@Override
public void deleteElementStart(String type, Attributes attrs) {}
@Override
public void deleteElementEnd() {}
@Override
public void replaceAttributes(Attributes oldAttrs, Attributes newAttrs) {}
@Override
public void updateAttributes(AttributesUpdate attrUpdate) {}
}));
return size.get();
}