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- /*
- * 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.List;
-
- /**
- * This class represents a query with a condition.
- *
- * @param <T>
- * the return type
- */
-
- public class QueryWhere<T> {
-
- Query<T> query;
-
- QueryWhere(Query<T> query) {
- this.query = query;
- }
-
- public <A> QueryCondition<T, A> and(A x) {
- query.addConditionToken(ConditionAndOr.AND);
- return new QueryCondition<T, A>(query, x);
- }
-
- public <A> QueryCondition<T, A> or(A x) {
- query.addConditionToken(ConditionAndOr.OR);
- return new QueryCondition<T, A>(query, x);
- }
-
- public QueryWhere<T> limit(long limit) {
- query.limit(limit);
- return this;
- }
-
- public QueryWhere<T> offset(long offset) {
- query.offset(offset);
- return this;
- }
-
- public <X, Z> List<X> select(Z x) {
- return query.select(x);
- }
-
- public String getSQL() {
- SQLStatement stat = new SQLStatement(query.getDb());
- stat.appendSQL("SELECT *");
- query.appendFromWhere(stat);
- return stat.getSQL().trim();
- }
-
- public <X, Z> List<X> selectDistinct(Z x) {
- return query.selectDistinct(x);
- }
-
- public <X, Z> X selectFirst(Z x) {
- List<X> list = query.select(x);
- return list.isEmpty() ? null : list.get(0);
- }
-
- public List<T> select() {
- return query.select();
- }
-
- public T selectFirst() {
- List<T> list = select();
- return list.isEmpty() ? null : list.get(0);
- }
-
- public List<T> selectDistinct() {
- return query.selectDistinct();
- }
-
- /**
- * Order by a number of columns.
- *
- * @param expressions
- * the order by expressions
- * @return the query
- */
-
- public QueryWhere<T> orderBy(Object... expressions) {
- for (Object expr : expressions) {
- OrderExpression<T> e = new OrderExpression<T>(query, expr, false, false, false);
- query.addOrderBy(e);
- }
- return this;
- }
-
- public QueryWhere<T> orderByNullsFirst(Object expr) {
- OrderExpression<T> e = new OrderExpression<T>(query, expr, false, true, false);
- query.addOrderBy(e);
- return this;
- }
-
- public QueryWhere<T> orderByNullsLast(Object expr) {
- OrderExpression<T> e = new OrderExpression<T>(query, expr, false, false, true);
- query.addOrderBy(e);
- return this;
- }
-
- public QueryWhere<T> orderByDesc(Object expr) {
- OrderExpression<T> e = new OrderExpression<T>(query, expr, true, false, false);
- query.addOrderBy(e);
- return this;
- }
-
- public QueryWhere<T> orderByDescNullsFirst(Object expr) {
- OrderExpression<T> e = new OrderExpression<T>(query, expr, true, true, false);
- query.addOrderBy(e);
- return this;
- }
-
- public QueryWhere<T> orderByDescNullsLast(Object expr) {
- OrderExpression<T> e = new OrderExpression<T>(query, expr, true, false, true);
- query.addOrderBy(e);
- return this;
- }
-
- public int delete() {
- return query.delete();
- }
-
- public int update() {
- return query.update();
- }
-
- public long selectCount() {
- return query.selectCount();
- }
-
- }
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