use of org.apache.ignite.internal.processors.query.IgniteSQLException in project ignite by apache.
the class DmlAstUtils method elementOrDefault.
/**
* Do what we can to compute default value for this column (mimics H2 behavior).
* @see Table#getDefaultValue
* @see Column#validateConvertUpdateSequence
* @param el SQL element.
* @param col Column.
* @return {@link GridSqlConst#NULL}, if {@code el} is null, or {@code el} if
* it's not {@link GridSqlKeyword#DEFAULT}, or computed default value.
*/
private static GridSqlElement elementOrDefault(GridSqlElement el, GridSqlColumn col) {
if (el == null)
return GridSqlConst.NULL;
if (el != GridSqlKeyword.DEFAULT)
return el;
Column h2Col = col.column();
Expression dfltExpr = h2Col.getDefaultExpression();
Value dfltVal;
try {
dfltVal = dfltExpr != null ? dfltExpr.getValue(null) : null;
} catch (Exception ignored) {
throw new IgniteSQLException("Failed to evaluate default value for a column " + col.columnName());
}
if (dfltVal != null)
return new GridSqlConst(dfltVal);
int type = h2Col.getType();
DataType dt = DataType.getDataType(type);
if (dt.decimal)
dfltVal = ValueInt.get(0).convertTo(type);
else if (dt.type == Value.TIMESTAMP)
dfltVal = ValueTimestamp.fromMillis(U.currentTimeMillis());
else if (dt.type == Value.TIME)
dfltVal = ValueTime.fromNanos(0);
else if (dt.type == Value.DATE)
dfltVal = ValueDate.fromMillis(U.currentTimeMillis());
else
dfltVal = ValueString.get("").convertTo(type);
return new GridSqlConst(dfltVal);
}
use of org.apache.ignite.internal.processors.query.IgniteSQLException in project ignite by apache.
the class UpdatePlanBuilder method planForInsert.
/**
* Prepare update plan for INSERT or MERGE.
*
* @param stmt INSERT or MERGE statement.
* @return Update plan.
* @throws IgniteCheckedException if failed.
*/
@SuppressWarnings("ConstantConditions")
private static UpdatePlan planForInsert(GridSqlStatement stmt) throws IgniteCheckedException {
GridSqlQuery sel;
GridSqlElement target;
GridSqlColumn[] cols;
boolean isTwoStepSubqry;
int rowsNum;
GridSqlTable tbl;
GridH2RowDescriptor desc;
if (stmt instanceof GridSqlInsert) {
GridSqlInsert ins = (GridSqlInsert) stmt;
target = ins.into();
tbl = gridTableForElement(target);
desc = tbl.dataTable().rowDescriptor();
cols = ins.columns();
sel = DmlAstUtils.selectForInsertOrMerge(cols, ins.rows(), ins.query(), desc);
isTwoStepSubqry = (ins.query() != null);
rowsNum = isTwoStepSubqry ? 0 : ins.rows().size();
} else if (stmt instanceof GridSqlMerge) {
GridSqlMerge merge = (GridSqlMerge) stmt;
target = merge.into();
tbl = gridTableForElement(target);
desc = tbl.dataTable().rowDescriptor();
// This check also protects us from attempts to update key or its fields directly -
// when no key except cache key can be used, it will serve only for uniqueness checks,
// not for updates, and hence will allow putting new pairs only.
// We don't quote _key and _val column names on CREATE TABLE, so they are always uppercase here.
GridSqlColumn[] keys = merge.keys();
if (keys.length != 1 || !desc.isKeyColumn(tbl.dataTable().getColumn(keys[0].columnName()).getColumnId()))
throw new CacheException("SQL MERGE does not support arbitrary keys");
cols = merge.columns();
sel = DmlAstUtils.selectForInsertOrMerge(cols, merge.rows(), merge.query(), desc);
isTwoStepSubqry = (merge.query() != null);
rowsNum = isTwoStepSubqry ? 0 : merge.rows().size();
} else
throw new IgniteSQLException("Unexpected DML operation [cls=" + stmt.getClass().getName() + ']', IgniteQueryErrorCode.UNEXPECTED_OPERATION);
// Let's set the flag only for subqueries that have their FROM specified.
isTwoStepSubqry = (isTwoStepSubqry && (sel instanceof GridSqlUnion || (sel instanceof GridSqlSelect && ((GridSqlSelect) sel).from() != null)));
int keyColIdx = -1;
int valColIdx = -1;
boolean hasKeyProps = false;
boolean hasValProps = false;
if (desc == null)
throw new IgniteSQLException("Row descriptor undefined for table '" + tbl.dataTable().getName() + "'", IgniteQueryErrorCode.NULL_TABLE_DESCRIPTOR);
GridCacheContext<?, ?> cctx = desc.context();
String[] colNames = new String[cols.length];
int[] colTypes = new int[cols.length];
for (int i = 0; i < cols.length; i++) {
GridSqlColumn col = cols[i];
String colName = col.columnName();
colNames[i] = colName;
colTypes[i] = col.resultType().type();
int colId = col.column().getColumnId();
if (desc.isKeyColumn(colId)) {
keyColIdx = i;
continue;
}
if (desc.isValueColumn(colId)) {
valColIdx = i;
continue;
}
GridQueryProperty prop = desc.type().property(colName);
assert prop != null : "Property '" + colName + "' not found.";
if (prop.key())
hasKeyProps = true;
else
hasValProps = true;
}
KeyValueSupplier keySupplier = createSupplier(cctx, desc.type(), keyColIdx, hasKeyProps, true, false);
KeyValueSupplier valSupplier = createSupplier(cctx, desc.type(), valColIdx, hasValProps, false, false);
if (stmt instanceof GridSqlMerge)
return UpdatePlan.forMerge(tbl.dataTable(), colNames, colTypes, keySupplier, valSupplier, keyColIdx, valColIdx, sel.getSQL(), !isTwoStepSubqry, rowsNum);
else
return UpdatePlan.forInsert(tbl.dataTable(), colNames, colTypes, keySupplier, valSupplier, keyColIdx, valColIdx, sel.getSQL(), !isTwoStepSubqry, rowsNum);
}
use of org.apache.ignite.internal.processors.query.IgniteSQLException in project ignite by apache.
the class UpdatePlanBuilder method planForUpdate.
/**
* Prepare update plan for UPDATE or DELETE.
*
* @param stmt UPDATE or DELETE statement.
* @param errKeysPos index to inject param for re-run keys at. Null if it's not a re-run plan.
* @return Update plan.
* @throws IgniteCheckedException if failed.
*/
private static UpdatePlan planForUpdate(GridSqlStatement stmt, @Nullable Integer errKeysPos) throws IgniteCheckedException {
GridSqlElement target;
FastUpdateArguments fastUpdate;
UpdateMode mode;
if (stmt instanceof GridSqlUpdate) {
// Let's verify that user is not trying to mess with key's columns directly
verifyUpdateColumns(stmt);
GridSqlUpdate update = (GridSqlUpdate) stmt;
target = update.target();
fastUpdate = DmlAstUtils.getFastUpdateArgs(update);
mode = UpdateMode.UPDATE;
} else if (stmt instanceof GridSqlDelete) {
GridSqlDelete del = (GridSqlDelete) stmt;
target = del.from();
fastUpdate = DmlAstUtils.getFastDeleteArgs(del);
mode = UpdateMode.DELETE;
} else
throw new IgniteSQLException("Unexpected DML operation [cls=" + stmt.getClass().getName() + ']', IgniteQueryErrorCode.UNEXPECTED_OPERATION);
GridSqlTable tbl = gridTableForElement(target);
GridH2Table gridTbl = tbl.dataTable();
GridH2RowDescriptor desc = gridTbl.rowDescriptor();
if (desc == null)
throw new IgniteSQLException("Row descriptor undefined for table '" + gridTbl.getName() + "'", IgniteQueryErrorCode.NULL_TABLE_DESCRIPTOR);
if (fastUpdate != null)
return UpdatePlan.forFastUpdate(mode, gridTbl, fastUpdate);
else {
GridSqlSelect sel;
if (stmt instanceof GridSqlUpdate) {
List<GridSqlColumn> updatedCols = ((GridSqlUpdate) stmt).cols();
int valColIdx = -1;
String[] colNames = new String[updatedCols.size()];
int[] colTypes = new int[updatedCols.size()];
for (int i = 0; i < updatedCols.size(); i++) {
colNames[i] = updatedCols.get(i).columnName();
colTypes[i] = updatedCols.get(i).resultType().type();
Column column = updatedCols.get(i).column();
if (desc.isValueColumn(column.getColumnId()))
valColIdx = i;
}
boolean hasNewVal = (valColIdx != -1);
// Statement updates distinct properties if it does not have _val in updated columns list
// or if its list of updated columns includes only _val, i.e. is single element.
boolean hasProps = !hasNewVal || updatedCols.size() > 1;
// Index of new _val in results of SELECT
if (hasNewVal)
valColIdx += 2;
int newValColIdx = (hasNewVal ? valColIdx : 1);
KeyValueSupplier newValSupplier = createSupplier(desc.context(), desc.type(), newValColIdx, hasProps, false, true);
sel = DmlAstUtils.selectForUpdate((GridSqlUpdate) stmt, errKeysPos);
return UpdatePlan.forUpdate(gridTbl, colNames, colTypes, newValSupplier, valColIdx, sel.getSQL());
} else {
sel = DmlAstUtils.selectForDelete((GridSqlDelete) stmt, errKeysPos);
return UpdatePlan.forDelete(gridTbl, sel.getSQL());
}
}
}
use of org.apache.ignite.internal.processors.query.IgniteSQLException in project ignite by apache.
the class UpdatePlanBuilder method gridTableForElement.
/**
* @param target Expression to extract the table from.
* @return Back end table for this element.
*/
private static GridSqlTable gridTableForElement(GridSqlElement target) {
Set<GridSqlTable> tbls = new HashSet<>();
DmlAstUtils.collectAllGridTablesInTarget(target, tbls);
if (tbls.size() != 1)
throw new IgniteSQLException("Failed to determine target table", IgniteQueryErrorCode.TABLE_NOT_FOUND);
return tbls.iterator().next();
}
use of org.apache.ignite.internal.processors.query.IgniteSQLException in project ignite by apache.
the class JdbcResultSet method next.
/** {@inheritDoc} */
@SuppressWarnings("unchecked")
@Override
public boolean next() throws SQLException {
ensureNotClosed();
if (it == null || (stmt.getMaxRows() > 0 && pos >= stmt.getMaxRows())) {
curr = null;
return false;
} else if (it.hasNext()) {
curr = new ArrayList<>(it.next());
pos++;
if (finished && !it.hasNext())
it = null;
return true;
} else if (!finished) {
JdbcConnection conn = (JdbcConnection) stmt.getConnection();
Ignite ignite = conn.ignite();
UUID nodeId = conn.nodeId();
boolean loc = nodeId == null;
// Connections from new clients send queries with new tasks, so we have to continue in the same manner
JdbcQueryTask qryTask = new JdbcQueryTask(loc ? ignite : null, conn.cacheName(), conn.schemaName(), null, true, loc, null, fetchSize, uuid, conn.isLocalQuery(), conn.isCollocatedQuery(), conn.isDistributedJoins());
try {
JdbcQueryTask.QueryResult res = loc ? qryTask.call() : ignite.compute(ignite.cluster().forNodeId(nodeId)).call(qryTask);
finished = res.isFinished();
it = res.getRows().iterator();
return next();
} catch (IgniteSQLException e) {
throw e.toJdbcException();
} catch (Exception e) {
throw new SQLException("Failed to query Ignite.", e);
}
}
it = null;
return false;
}
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