/*
* Copyright (C) 2012-2015 DataStax Inc.
*
* 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 com.datastax.driver.mapping;
import com.datastax.driver.core.TableMetadata;
import com.datastax.driver.core.querybuilder.Delete;
import com.datastax.driver.core.querybuilder.Insert;
import com.datastax.driver.core.querybuilder.Select;
import java.util.Collection;
import java.util.Set;
import static com.datastax.driver.core.querybuilder.QueryBuilder.*;
enum QueryType {
SAVE {
@Override
String makePreparedQueryString(TableMetadata table, EntityMapper<?> mapper, MappingManager manager, Set<AliasedMappedProperty> columns, Collection<Mapper.Option> options) {
Insert insert = table == null
? insertInto(mapper.keyspace, mapper.table)
: insertInto(table);
for (AliasedMappedProperty col : columns)
if (!col.mappedProperty.isComputed())
insert.value(col.mappedProperty.getMappedName(), bindMarker());
for (Mapper.Option opt : options) {
opt.validate(QueryType.SAVE, manager);
opt.modifyQueryString(insert);
}
return insert.toString();
}
},
GET {
@Override
String makePreparedQueryString(TableMetadata table, EntityMapper<?> mapper, MappingManager manager, Set<AliasedMappedProperty> columns, Collection<Mapper.Option> options) {
Select.Selection selection = select();
for (AliasedMappedProperty col : mapper.allColumns) {
Select.SelectionOrAlias column = col.mappedProperty.isComputed()
? selection.raw(col.mappedProperty.getMappedName())
: selection.column(col.mappedProperty.getMappedName());
if (col.alias == null) {
selection = column;
} else {
selection = column.as(col.alias);
}
}
Select select;
if (table == null) {
select = selection.from(mapper.keyspace, mapper.table);
} else {
select = selection.from(table);
}
Select.Where where = select.where();
for (int i = 0; i < mapper.primaryKeySize(); i++)
where.and(eq(mapper.getPrimaryKeyColumn(i).mappedProperty.getMappedName(), bindMarker()));
for (Mapper.Option option : options) {
option.validate(QueryType.GET, manager);
option.modifyQueryString(select);
}
return select.toString();
}
},
DEL {
@Override
String makePreparedQueryString(TableMetadata table, EntityMapper<?> mapper, MappingManager manager, Set<AliasedMappedProperty> columns, Collection<Mapper.Option> options) {
Delete delete = table == null
? delete().all().from(mapper.keyspace, mapper.table)
: delete().all().from(table);
Delete.Where where = delete.where();
for (int i = 0; i < mapper.primaryKeySize(); i++)
where.and(eq(mapper.getPrimaryKeyColumn(i).mappedProperty.getMappedName(), bindMarker()));
for (Mapper.Option option : options) {
option.validate(QueryType.DEL, manager);
option.modifyQueryString(delete);
}
return delete.toString();
}
};
abstract String makePreparedQueryString(TableMetadata table, EntityMapper<?> mapper, MappingManager manager, Set<AliasedMappedProperty> columns, Collection<Mapper.Option> options);
}