GenericTableColumnManager.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.generic.edit;

import org.jkiss.code.Nullable;
import org.jkiss.dbeaver.ext.generic.GenericConstants;
import org.jkiss.dbeaver.ext.generic.model.GenericTable;
import org.jkiss.dbeaver.ext.generic.model.GenericTableColumn;
import org.jkiss.dbeaver.model.DBConstants;
import org.jkiss.dbeaver.model.DBPDataKind;
import org.jkiss.dbeaver.model.edit.DBECommandContext;
import org.jkiss.dbeaver.model.impl.DBSObjectCache;
import org.jkiss.dbeaver.model.impl.edit.DBECommandAbstract;
import org.jkiss.dbeaver.model.impl.sql.edit.struct.SQLTableColumnManager;
import org.jkiss.dbeaver.model.runtime.DBRProgressMonitor;
import org.jkiss.dbeaver.model.struct.DBSDataType;
import org.jkiss.dbeaver.model.struct.DBSObject;
import org.jkiss.utils.CommonUtils;

import java.sql.Types;

/**
 * Generic table column manager
 */
public class GenericTableColumnManager extends SQLTableColumnManager<GenericTableColumn, GenericTable> {

    @Nullable
    @Override
    public DBSObjectCache<? extends DBSObject, GenericTableColumn> getObjectsCache(GenericTableColumn object)
    {
        return object.getParentObject().getContainer().getTableCache().getChildrenCache(object.getParentObject());
    }

    @Override
    protected GenericTableColumn createDatabaseObject(DBRProgressMonitor monitor, DBECommandContext context, GenericTable parent, Object copyFrom)
    {
        DBSDataType columnType = findBestDataType(parent.getDataSource(), DBConstants.DEFAULT_DATATYPE_NAMES);

        final GenericTableColumn column = new GenericTableColumn(parent);
        column.setName(getNewColumnName(monitor, context, parent));
        column.setTypeName(columnType == null ? "INTEGER" : columnType.getName());
        column.setMaxLength(columnType != null && columnType.getDataKind() == DBPDataKind.STRING ? 100 : 0);
        column.setValueType(columnType == null ? Types.INTEGER : columnType.getTypeID());
        column.setOrdinalPosition(-1);
        return column;
    }

    @Override
    public StringBuilder getNestedDeclaration(GenericTable owner, DBECommandAbstract<GenericTableColumn> command)
    {
        StringBuilder decl = super.getNestedDeclaration(owner, command);
        final GenericTableColumn column = command.getObject();
        if (column.isAutoIncrement()) {
            final String autoIncrementClause = column.getDataSource().getMetaModel().getAutoIncrementClause(column);
            if (autoIncrementClause != null && !autoIncrementClause.isEmpty()) {
                decl.append(" ").append(autoIncrementClause); //$NON-NLS-1$
            }
        }
        return decl;
    }

    @Override
    protected long getDDLFeatures(GenericTableColumn object) {
        long features = 0;
        Object shortDrop = object.getDataSource().getContainer().getDriver().getDriverParameter(GenericConstants.PARAM_DDL_DROP_COLUMN_SHORT);
        if (shortDrop != null && CommonUtils.toBoolean(shortDrop)) {
            features |= DDL_FEATURE_OMIT_COLUMN_CLAUSE_IN_DROP;
        }
        return features;
    }

}