GenericIndexManager.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.model.GenericTable;
import org.jkiss.dbeaver.ext.generic.model.GenericTableColumn;
import org.jkiss.dbeaver.ext.generic.model.GenericTableIndex;
import org.jkiss.dbeaver.ext.generic.model.GenericTableIndexColumn;
import org.jkiss.dbeaver.model.edit.DBECommandContext;
import org.jkiss.dbeaver.model.impl.DBObjectNameCaseTransformer;
import org.jkiss.dbeaver.model.impl.DBSObjectCache;
import org.jkiss.dbeaver.model.impl.sql.edit.struct.SQLIndexManager;
import org.jkiss.dbeaver.model.runtime.DBRProgressMonitor;
import org.jkiss.dbeaver.model.struct.DBSEntityAttribute;
import org.jkiss.dbeaver.model.struct.DBSObject;
import org.jkiss.dbeaver.model.struct.rdb.DBSIndexType;
import org.jkiss.dbeaver.ui.UITask;
import org.jkiss.dbeaver.ui.editors.object.struct.EditIndexPage;
import org.jkiss.utils.CommonUtils;

import java.util.Collections;
import java.util.Map;

/**
 * Generic index manager
 */
public class GenericIndexManager extends SQLIndexManager<GenericTableIndex, GenericTable> {

    @Nullable
    @Override
    public DBSObjectCache<? extends DBSObject, GenericTableIndex> getObjectsCache(GenericTableIndex object)
    {
        return object.getTable().getContainer().getIndexCache();
    }

    @Override
    protected GenericTableIndex createDatabaseObject(
        DBRProgressMonitor monitor, DBECommandContext context, final GenericTable parent,
        Object from)
    {
        return new UITask<GenericTableIndex>() {
            @Override
            protected GenericTableIndex runTask() {
                EditIndexPage editPage = new EditIndexPage(
                    "Create index",
                    parent,
                    Collections.singletonList(DBSIndexType.OTHER));
                if (!editPage.edit()) {
                    return null;
                }
                final GenericTableIndex index = parent.getDataSource().getMetaModel().createIndexImpl(
                    parent,
                    !editPage.isUnique(),
                    null,
                    0,
                    null,
                    editPage.getIndexType(),
                    false);
                StringBuilder idxName = new StringBuilder(64);
                idxName.append(CommonUtils.escapeIdentifier(parent.getName()));
                int colIndex = 1;
                for (DBSEntityAttribute tableColumn : editPage.getSelectedAttributes()) {
                    if (colIndex == 1) {
                        idxName.append("_").append(CommonUtils.escapeIdentifier(tableColumn.getName()));
                    }
                    index.addColumn(
                        new GenericTableIndexColumn(
                            index,
                            (GenericTableColumn) tableColumn,
                            colIndex++,
                            !Boolean.TRUE.equals(editPage.getAttributeProperty(tableColumn, EditIndexPage.PROP_DESC))));
                }
                idxName.append("_IDX");
                index.setName(DBObjectNameCaseTransformer.transformObjectName(index, idxName.toString()));
                return index;
            }
        }.execute();
    }

}