package org.basex.query.up.primitives;
import static org.basex.query.util.Err.*;
import org.basex.data.Data;
import org.basex.query.QueryException;
import org.basex.query.iter.NodeCache;
import org.basex.query.up.NamePool;
import org.basex.util.InputInfo;
/**
* Replace node primitive.
*
* @author BaseX Team 2005-12, BSD License
* @author Lukas Kircher
*/
public final class ReplaceNode extends NodeCopy {
/**
* Constructor.
* @param p pre
* @param d data
* @param i input info
* @param c node copy
*/
public ReplaceNode(final int p, final Data d, final InputInfo i,
final NodeCache c) {
super(PrimitiveType.REPLACENODE, p, d, i, c);
}
@Override
public void apply() {
final int kind = data.kind(pre);
final int par = data.parent(pre, kind);
shifts = data.size(pre, kind) - md.meta.size;
if(kind == Data.TEXT && md.meta.size == 1 && md.kind(0) == Data.TEXT) {
// overwrite existing text node
data.update(pre, Data.TEXT, md.text(0, true));
} else {
if(data.nspaces.size() == 0 && md.nspaces.size() == 0) {
// replaces table nodes directly if no namespaces are specified
data.replace(pre, md);
} else {
data.delete(pre);
if(kind == Data.ATTR) data.insertAttr(pre, par, md);
else data.insert(pre, par, md);
}
}
}
@Override
public void update(final NamePool pool) {
if(md == null) return;
add(pool);
pool.remove(targetNode());
}
@Override
public boolean adjacentTexts(final int c) {
final int p = pre + c;
boolean merged = mergeTexts(data, p - 1, p);
merged |= mergeTexts(data, p + md.meta.size - 1, p + md.meta.size);
return merged;
}
@Override
public void merge(final UpdatePrimitive p) throws QueryException {
UPMULTREPL.thrw(input, targetNode());
}
}