123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113 |
- /*
- * Copyright 2004-2011 H2 Group.
- * Copyright 2011 James Moger.
- *
- * 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.iciql;
-
- import java.util.ArrayList;
-
- import com.iciql.util.Utils;
-
- /**
- * This class represents a table in a query.
- *
- * @param <T>
- * the table class
- */
-
- class SelectTable<T> {
-
- private static int asCounter;
- private Query<T> query;
- private Class<T> clazz;
- private T current;
- private String as;
- private TableDefinition<T> aliasDef;
- private boolean outerJoin;
- private ArrayList<Token> joinConditions = Utils.newArrayList();
- private T alias;
-
- @SuppressWarnings("unchecked")
- SelectTable(Db db, Query<T> query, T alias, boolean outerJoin) {
- this.alias = alias;
- this.query = query;
- this.outerJoin = outerJoin;
- aliasDef = (TableDefinition<T>) db.getTableDefinition(alias.getClass());
- clazz = Utils.getClass(alias);
- as = "T" + asCounter++;
- }
-
- T getAlias() {
- return alias;
- }
-
- T newObject() {
- return Utils.newObject(clazz);
- }
-
- TableDefinition<T> getAliasDefinition() {
- return aliasDef;
- }
-
- void appendSQL(SQLStatement stat) {
- if (query.isJoin()) {
- stat.appendTable(aliasDef.schemaName, aliasDef.tableName).appendSQL(" AS " + as);
- } else {
- stat.appendTable(aliasDef.schemaName, aliasDef.tableName);
- }
- }
-
- void appendSQLAsJoin(SQLStatement stat, Query<T> q) {
- if (outerJoin) {
- stat.appendSQL(" LEFT OUTER JOIN ");
- } else {
- stat.appendSQL(" INNER JOIN ");
- }
- appendSQL(stat);
- if (!joinConditions.isEmpty()) {
- stat.appendSQL(" ON ");
- for (Token token : joinConditions) {
- token.appendSQL(stat, q);
- stat.appendSQL(" ");
- }
- }
- }
-
- boolean getOuterJoin() {
- return outerJoin;
- }
-
- Query<T> getQuery() {
- return query;
- }
-
- String getAs() {
- return as;
- }
-
- void addConditionToken(Token condition) {
- joinConditions.add(condition);
- }
-
- T getCurrent() {
- return current;
- }
-
- void setCurrent(T current) {
- this.current = current;
- }
-
- }
|