/**
* This method returns a list of completion proposals as ICompletionProposal objects. The
* proposals are based on the word at the offset in the document where the cursor is positioned.
* In this implementation, we find the word at the document offset and compare it to our list of
* SQL reserved words. The list is a subset, of those words that match what the user has entered.
* For example, the text or proposes the SQL keywords OR and ORDER. The list is returned as an
* array of completion proposals.
*
* @see
* org.eclipse.jface.text.contentassist.IContentAssistProcessor#computeCompletionProposals(ITextViewer,
* int)
*/
@Override
public ICompletionProposal[] computeCompletionProposals(ITextViewer viewer, int documentOffset) {
this.documentOffset = documentOffset;
this.activeQuery = null;
this.wordDetector =
new SQLWordPartDetector(viewer.getDocument(), editor.getSyntaxManager(), documentOffset);
final String wordPart = wordDetector.getWordPart();
if (lookupTemplates) {
return makeTemplateProposals(viewer, documentOffset, wordPart);
}
final List<SQLCompletionProposal> proposals = new ArrayList<>();
QueryType queryType = null;
{
final String prevKeyWord = wordDetector.getPrevKeyWord();
if (!CommonUtils.isEmpty(prevKeyWord)) {
if (editor.getSyntaxManager().getDialect().isEntityQueryWord(prevKeyWord)) {
queryType = QueryType.TABLE;
} else if (editor.getSyntaxManager().getDialect().isAttributeQueryWord(prevKeyWord)) {
queryType = QueryType.COLUMN;
}
}
}
if (queryType != null) {
if (editor.getDataSource() != null) {
try {
final QueryType qt = queryType;
DBeaverUI.runInProgressService(
new DBRRunnableWithProgress() {
@Override
public void run(DBRProgressMonitor monitor)
throws InvocationTargetException, InterruptedException {
monitor.beginTask("Seeking for completion proposals", 1);
try {
monitor.subTask("Make structure proposals");
makeStructureProposals(monitor, proposals, wordPart, qt);
} finally {
monitor.done();
}
}
});
} catch (InvocationTargetException e) {
log.warn("Error while seeking for structure proposals", e.getTargetException());
} catch (InterruptedException e) {
// interrupted - do nothing
}
}
}
if (proposals.isEmpty() || !wordPart.isEmpty()) {
// Keyword assist
List<String> matchedKeywords =
editor.getSyntaxManager().getDialect().getMatchedKeywords(wordPart);
for (String keyWord : matchedKeywords) {
DBPKeywordType keywordType = editor.getSyntaxManager().getDialect().getKeywordType(keyWord);
if (keywordType != null) {
proposals.add(
createCompletionProposal(
keyWord, keyWord, keyWord + " (" + keywordType.name() + ")", null, false, null));
}
}
}
// Remove duplications
for (int i = 0; i < proposals.size(); i++) {
SQLCompletionProposal proposal = proposals.get(i);
for (int j = i + 1; j < proposals.size(); ) {
SQLCompletionProposal proposal2 = proposals.get(j);
if (proposal.getDisplayString().equals(proposal2.getDisplayString())) {
proposals.remove(j);
} else {
j++;
}
}
}
DBSObject selectedObject = getSelectedObject(editor.getDataSource());
boolean hideDups =
getPreferences().getBoolean(SQLPreferenceConstants.HIDE_DUPLICATE_PROPOSALS)
&& selectedObject != null;
if (hideDups) {
for (int i = 0; i < proposals.size(); i++) {
SQLCompletionProposal proposal = proposals.get(i);
for (int j = 0; j < proposals.size(); ) {
SQLCompletionProposal proposal2 = proposals.get(j);
if (i != j
&& proposal.hasStructObject()
&& proposal2.hasStructObject()
&& CommonUtils.equalObjects(
proposal.getObject().getName(), proposal2.getObject().getName())
&& proposal.getObjectContainer() == selectedObject) {
proposals.remove(j);
} else {
j++;
}
}
}
}
if (hideDups) {
// Remove duplicates from non-active schema
if (selectedObject instanceof DBSObjectContainer) {
// List<ICompletionProposal>
}
}
return proposals.toArray(new ICompletionProposal[proposals.size()]);
}