/**
* Copyright (C) 2009-2013 FoundationDB, LLC
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package com.foundationdb.server.service.restdml;
import java.util.HashMap;
import java.util.Map;
import com.foundationdb.ais.model.AkibanInformationSchema;
import com.foundationdb.ais.model.CacheValueGenerator;
import com.foundationdb.ais.model.Column;
import com.foundationdb.ais.model.Table;
import com.foundationdb.ais.model.TableName;
import com.foundationdb.qp.operator.QueryBindings;
import com.foundationdb.qp.operator.QueryContext;
import com.foundationdb.qp.operator.StoreAdapter;
import com.foundationdb.qp.rowtype.Schema;
import com.foundationdb.qp.util.SchemaCache;
import com.foundationdb.server.error.NoSuchColumnException;
import com.foundationdb.server.error.NoSuchTableException;
import com.foundationdb.server.error.ProtectedTableDDLException;
import com.foundationdb.server.types.service.TypesRegistryService;
import com.foundationdb.server.service.session.Session;
import com.foundationdb.server.store.SchemaManager;
import com.foundationdb.server.store.Store;
import com.foundationdb.server.types.common.types.TypesTranslator;
import com.foundationdb.server.types.value.Value;
import com.foundationdb.server.types.value.ValueSource;
public abstract class DMLProcessor {
private final Store store;
private final SchemaManager schemaManager;
private final TypesRegistryService registryService;
public DMLProcessor(Store store, SchemaManager schemaManager,
TypesRegistryService typesRegistryService) {
this.store = store;
this.schemaManager = schemaManager;
this.registryService = typesRegistryService;
}
protected Column getColumn (Table table, String field) {
Column column = table.getColumn(field);
if (column == null) {
throw new NoSuchColumnException(field);
}
return column;
}
protected <T extends OperatorGenerator> T getGenerator(CacheValueGenerator<T> generator, ProcessContext context) {
T gen = context.ais().getCachedValue(this, generator);
gen.setTypesRegistry(registryService);
gen.setTypesTranslator(context.typesTranslator);
return gen;
}
protected TypesTranslator getTypesTranslator() {
return schemaManager.getTypesTranslator();
}
public class ProcessContext {
public TableName tableName;
public Table table;
public QueryContext queryContext;
public QueryBindings queryBindings;
public Session session;
public Map<Column, ValueSource> pkValues;
public Map<Column, String> allValues;
public boolean anyUpdates;
private final AkibanInformationSchema ais;
private final Schema schema;
public final TypesTranslator typesTranslator;
public ProcessContext (AkibanInformationSchema ais, Session session, TableName tableName) {
this.tableName = tableName;
this.ais = ais;
this.session = session;
this.schema = SchemaCache.globalSchema(ais);
this.typesTranslator = getTypesTranslator();
this.table = getTable();
this.queryContext = new RestQueryContext(getAdapter());
this.queryBindings = queryContext.createBindings();
allValues = new HashMap<>();
}
protected AkibanInformationSchema ais() {
return ais;
}
private StoreAdapter getAdapter() {
// no writing to the memory tables.
if (table.hasMemoryTableFactory())
throw new ProtectedTableDDLException (table.getName());
return store.createAdapter(session, schema);
}
private Table getTable () {
Table table = ais.getTable(tableName);
if (table == null) {
throw new NoSuchTableException(tableName.getSchemaName(), tableName.getTableName());
} else if (table.isProtectedTable()) {
throw new ProtectedTableDDLException (table.getName());
}
return table;
}
}
}