com.sap.cds.jdbc.hana.HanaBinder Maven / Gradle / Ivy
/************************************************************************
* © 2021-2024 SAP SE or an SAP affiliate company. All rights reserved. *
************************************************************************/
package com.sap.cds.jdbc.hana;
import static com.sap.cds.impl.util.RealVectorUtils.toByteArray;
import java.io.InputStream;
import java.io.Reader;
import java.sql.Blob;
import java.sql.NClob;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Types;
import java.util.TimeZone;
import com.sap.cds.CdsDataStoreException;
import com.sap.cds.CdsVector;
import com.sap.cds.impl.builder.model.RealVector;
import com.sap.cds.jdbc.generic.GenericBinder;
// package private
class HanaBinder extends GenericBinder {
// package private
HanaBinder(TimeZone timeZone) {
// no public construction
super(7, timeZone);
}
@Override
protected Reader getLargeString(ResultSet result, int i) throws SQLException {
NClob nClob = result.getNClob(i);
return null == nClob ? null : nClob.getCharacterStream();
}
@Override
protected InputStream getLargeBinary(ResultSet result, int i) throws SQLException {
Blob blob = result.getBlob(i);
return null == blob ? null : blob.getBinaryStream();
}
@Override
protected void setRealVector(PreparedStatement pstmt, int i, Object vector) throws SQLException {
if (vector instanceof RealVector v) {
vector = v.vector();
}
if (vector == null) {
pstmt.setNull(i, Types.BINARY);
} else if (vector instanceof byte[] b) {
pstmt.setBytes(i, b);
} else if (vector instanceof float[] f) {
pstmt.setBytes(i, toByteArray(f));
} else if (vector instanceof String s) {
pstmt.setBytes(i, toByteArray(s));
} else {
throw new CdsDataStoreException(vector.getClass().getName() + " is not supported for type cds.Vector");
}
}
@Override
protected CdsVector getRealVector(ResultSet result, int i) throws SQLException {
byte[] vector = result.getBytes(i);
return RealVector.hanaRealVector(vector);
}
}