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dbeaver#23390 Support REAL_VECTOR type in HANA plugin
The new vector data type REAL_VECTOR was introduced with HANA Cloud Database QRC 1/2024. Details about the new type are available in the SAP HANA Database Vector Engine Guide. HANA's JDBC driver natively supports that type starting with version 2.21.5. This change introduces a new value handler so that vectors are displayed like arrays. Furthermore, the column type modifiers are adapted to display vector dimension constraints.
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79
...ss.dbeaver.ext.hana/src/org/jkiss/dbeaver/ext/hana/model/data/HANAVectorValueHandler.java
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,79 @@ | ||
| /* | ||
| * DBeaver - Universal Database Manager | ||
| * Copyright (C) 2010-2024 DBeaver Corp and others | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
| package org.jkiss.dbeaver.ext.hana.model.data; | ||
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| import java.sql.SQLException; | ||
| import java.sql.Types; | ||
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| import org.jkiss.dbeaver.model.data.DBDCollection; | ||
| import org.jkiss.dbeaver.model.exec.DBCException; | ||
| import org.jkiss.dbeaver.model.exec.DBCLogicalOperator; | ||
| import org.jkiss.dbeaver.model.exec.DBCSession; | ||
| import org.jkiss.dbeaver.model.exec.jdbc.JDBCPreparedStatement; | ||
| import org.jkiss.dbeaver.model.exec.jdbc.JDBCSession; | ||
| import org.jkiss.dbeaver.model.impl.jdbc.data.JDBCCollection; | ||
| import org.jkiss.dbeaver.model.impl.jdbc.data.handlers.JDBCArrayValueHandler; | ||
| import org.jkiss.dbeaver.model.struct.DBSTypedObject; | ||
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| public class HANAVectorValueHandler extends JDBCArrayValueHandler { | ||
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| public static final HANAVectorValueHandler INSTANCE = new HANAVectorValueHandler(); | ||
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| @Override | ||
| protected boolean useGetArray(DBCSession session, DBSTypedObject type) { | ||
| return true; | ||
| } | ||
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| @Override | ||
| protected void bindParameter(JDBCSession session, JDBCPreparedStatement statement, DBSTypedObject paramType, | ||
| int paramIndex, Object value) throws DBCException, SQLException { | ||
| if (value == null) { | ||
| statement.setNull(paramIndex, Types.ARRAY); | ||
| } else if (value instanceof DBDCollection) { | ||
| DBDCollection collection = (DBDCollection) value; | ||
| if (collection.isNull()) { | ||
| statement.setNull(paramIndex, Types.ARRAY); | ||
| } else if (collection instanceof JDBCCollection) { | ||
| JDBCCollection jc = (JDBCCollection) collection; | ||
| if (jc.getComponentType().getTypeID() != Types.REAL) { | ||
| throw new DBCException("Only REAL numbers are allowed in vectors"); | ||
| } | ||
| float[] nvals = new float[jc.size()]; | ||
| for (int i = 0; i < nvals.length; ++i) { | ||
| Float val = (Float) jc.get(i); | ||
| if (val == null) { | ||
| throw new DBCException("NULL elements are not allowed in vectors"); | ||
| } | ||
| nvals[i] = val; | ||
| } | ||
| statement.setObject(paramIndex, nvals); | ||
| } else { | ||
| throw new DBCException("Array parameter type '" + value.getClass().getName() + "' not supported"); | ||
| } | ||
| } else { | ||
| throw new DBCException("Array parameter type '" + value.getClass().getName() + "' not supported"); | ||
| } | ||
| } | ||
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| private static DBCLogicalOperator[] SUPPORTED_OPERATORS = { DBCLogicalOperator.IS_NOT_NULL, | ||
| DBCLogicalOperator.IS_NULL }; | ||
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| @Override | ||
| public DBCLogicalOperator[] getSupportedOperators(DBSTypedObject attribute) { | ||
| return SUPPORTED_OPERATORS; | ||
| } | ||
| } |