/**
* Performs the replace function.
*
* @param ctx query context
* @return {@code null}
* @throws QueryException query exception
*/
private Item replace(final QueryContext ctx) throws QueryException {
checkWrite(ctx);
final Data data = data(0, ctx);
final String path = path(1, ctx);
final Item doc = checkItem(expr[2], ctx);
// collect all old documents
final Resources res = data.resources;
final int pre = res.doc(path);
if (pre != -1) {
if (res.docs(path).size() != 1) DOCTRGMULT.thrw(input);
ctx.updates.add(new DeleteNode(pre, data, input), ctx);
}
// delete binary resources
final IOFile bin = data.meta.binary(path);
if (bin != null) ctx.updates.add(new DBDelete(data, path, input), ctx);
ctx.updates.add(new DBAdd(data, input, doc, path, ctx.context), ctx);
final IOFile file = data.meta.binary(path);
if (file != null && file.exists() && !file.isDir()) {
final Item it = checkItem(doc, ctx);
ctx.updates.add(new DBStore(data, token(path), it, input), ctx);
}
return null;
}
/**
* Performs the optimize function.
*
* @param ctx query context
* @return {@code null}
* @throws QueryException query exception
*/
private Item optimize(final QueryContext ctx) throws QueryException {
checkWrite(ctx);
final Data data = data(0, ctx);
final boolean all = expr.length == 2 && checkBln(expr[1], ctx);
ctx.updates.add(new DBOptimize(data, ctx.context, all, input), ctx);
return null;
}
/**
* Performs the add function.
*
* @param ctx query context
* @return {@code null}
* @throws QueryException query exception
*/
private Item add(final QueryContext ctx) throws QueryException {
checkWrite(ctx);
final Data data = data(0, ctx);
final Item it = checkItem(expr[1], ctx);
final String path = expr.length < 3 ? "" : path(2, ctx);
ctx.updates.add(new DBAdd(data, input, it, path, ctx.context), ctx);
return null;
}
/**
* Performs the store function.
*
* @param ctx query context
* @return {@code null}
* @throws QueryException query exception
*/
private Item store(final QueryContext ctx) throws QueryException {
checkWrite(ctx);
final Data data = data(0, ctx);
final String path = path(1, ctx);
final IOFile file = data.meta.binary(path);
if (file == null || file.isDir()) RESINV.thrw(input, path);
final Item it = checkItem(expr[2], ctx);
ctx.updates.add(new DBStore(data, token(path), it, input), ctx);
return null;
}
/**
* Performs the delete function.
*
* @param ctx query context
* @return {@code null}
* @throws QueryException query exception
*/
private Item delete(final QueryContext ctx) throws QueryException {
checkWrite(ctx);
final Data data = data(0, ctx);
final String path = path(1, ctx);
// delete XML resources
final IntList docs = data.resources.docs(path);
for (int i = 0, is = docs.size(); i < is; i++) {
ctx.updates.add(new DeleteNode(docs.get(i), data, input), ctx);
}
// delete raw resources
final IOFile bin = data.meta.binary(path);
if (bin == null) UPDBDELERR.thrw(input, path);
ctx.updates.add(new DBDelete(data, path, input), ctx);
return null;
}
/**
* Performs the rename function.
*
* @param ctx query context
* @return {@code null}
* @throws QueryException query exception
*/
private Item rename(final QueryContext ctx) throws QueryException {
checkWrite(ctx);
final Data data = data(0, ctx);
final String source = path(1, ctx);
final String target = path(2, ctx);
// the first step of the path should be the database name
final IntList il = data.resources.docs(source);
for (int i = 0, is = il.size(); i < is; i++) {
final int pre = il.get(i);
final String trg = Rename.target(data, pre, source, target);
if (trg.isEmpty()) EMPTYPATH.thrw(input, this);
ctx.updates.add(new ReplaceValue(pre, data, input, token(trg)), ctx);
}
// rename files
final IOFile src = data.meta.binary(source);
final IOFile trg = data.meta.binary(target);
if (src == null || trg == null) UPDBRENAMEERR.thrw(input, src);
ctx.updates.add(new DBRename(data, src.path(), trg.path(), input), ctx);
return null;
}