OracleObjectValueHandler.java

/*
 * DBeaver - Universal Database Manager
 * Copyright (C) 2010-2017 Serge Rider (serge@jkiss.org)
 *
 * 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.oracle.data;

import org.jkiss.code.NotNull;
import org.jkiss.dbeaver.model.data.DBDDisplayFormat;
import org.jkiss.dbeaver.model.exec.DBCException;
import org.jkiss.dbeaver.model.exec.DBCSession;
import org.jkiss.dbeaver.model.exec.jdbc.JDBCSession;
import org.jkiss.dbeaver.model.exec.jdbc.JDBCPreparedStatement;
import org.jkiss.dbeaver.model.exec.jdbc.JDBCResultSet;
import org.jkiss.dbeaver.model.impl.jdbc.data.handlers.JDBCAbstractValueHandler;
import org.jkiss.dbeaver.model.struct.DBSTypedObject;

import java.sql.SQLException;

/**
 * Object type support
 */
public class OracleObjectValueHandler extends JDBCAbstractValueHandler {

    public static final OracleObjectValueHandler INSTANCE = new OracleObjectValueHandler();

    @NotNull
    @Override
    public String getValueDisplayString(@NotNull DBSTypedObject column, Object value, @NotNull DBDDisplayFormat format)
    {
        if (value != null) {
            return "[OBJECT]";
        } else {
            return super.getValueDisplayString(column, value, format);
        }
    }

    @Override
    protected OracleObjectValue fetchColumnValue(DBCSession session, JDBCResultSet resultSet, DBSTypedObject type, int index) throws DBCException, SQLException
    {
        //final Object object = resultSet.getObject(columnIndex);
        Object object = resultSet.getObject(index);
        return getValueFromObject(session, type, object, false);
    }

    @Override
    protected void bindParameter(JDBCSession session, JDBCPreparedStatement statement, DBSTypedObject paramType, int paramIndex, Object value) throws DBCException, SQLException
    {
        throw new DBCException("Parameter bind is not implemented");
    }

    @NotNull
    @Override
    public Class<Object> getValueObjectType(@NotNull DBSTypedObject attribute)
    {
        return java.lang.Object.class;
    }

    @Override
    public OracleObjectValue getValueFromObject(@NotNull DBCSession session, @NotNull DBSTypedObject type, Object object, boolean copy) throws DBCException
    {
        if (object == null) {
            return new OracleObjectValue(null);
        } else if (object instanceof OracleObjectValue) {
            return copy ? new OracleObjectValue(((OracleObjectValue) object).getValue()) : (OracleObjectValue)object;
        } else {
            return new OracleObjectValue(object);
        }
    }

}