io.inversion.query.From Maven / Gradle / Ivy
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/*
* Copyright (c) 2015-2019 Rocket Partners, LLC
* https://github.com/inversion-api
*
* 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 io.inversion.query;
public class From extends Builder {
public From(P query) {
super(query);
withFunctions("_table", "_query", "_subquery", "_alias");
}
public String getQuery() {
return (String) find("_query", 0);
}
public String getSubquery() {
return (String) find("_subquery", 0);
}
public String getTable() {
String tableName = (String) find("_table", 0);
if (tableName == null && getParent().getCollection() != null) {
tableName = getParent().getCollection().getTableName();
}
if (tableName == null)
tableName = "";
return tableName;
}
public String getAlias() {
String alias = (String) find("_alias", 0);
if (alias == null) {
alias = (String) find("_table", 1);
}
if (alias == null) {
alias = (String) find("_subquery", 1);
}
if (alias == null)
alias = getTable();
return alias;
}
}