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diff --git a/src/main/java/com/iciql/Conditions.java b/src/main/java/com/iciql/Conditions.java
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+/*
+ * Copyright (c) 2009-2014, Architector Inc., Japan
+ * All rights reserved.
+ *
+ * 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;
+
+public abstract class Conditions<T> {
+
+ public static class And<T> extends Conditions<T> {
+
+ public And(Db db, T alias) {
+ super(db, alias);
+ }
+
+ protected QueryCondition<T, Boolean> and(boolean x) {
+ return where.and(x);
+ }
+
+ protected QueryCondition<T, Byte> and(byte x) {
+ return where.and(x);
+ }
+
+ protected QueryCondition<T, Short> and(short x) {
+ return where.and(x);
+ }
+
+ protected QueryCondition<T, Integer> and(int x) {
+ return where.and(x);
+ }
+
+ protected QueryCondition<T, Long> and(long x) {
+ return where.and(x);
+ }
+
+ protected QueryCondition<T, Float> and(float x) {
+ return where.and(x);
+ }
+
+ protected QueryCondition<T, Double> and(double x) {
+ return where.and(x);
+ }
+
+ protected <A> QueryCondition<T, A> and(A x) {
+ return where.and(x);
+ }
+
+ protected QueryWhere<T> and(And<T> conditions) {
+ where.andOpenTrue();
+ where.query.addConditionToken(conditions.where.query);
+ return where.close();
+ }
+
+ protected QueryWhere<T> and(Or<T> conditions) {
+ where.andOpenFalse();
+ where.query.addConditionToken(conditions.where.query);
+ return where.close();
+ }
+
+ }
+
+ public static class Or<T> extends Conditions<T> {
+
+ public Or(Db db, T alias) {
+ super(db, alias);
+ }
+
+ protected QueryCondition<T, Boolean> or(boolean x) {
+ return where.or(x);
+ }
+
+ protected QueryCondition<T, Byte> or(byte x) {
+ return where.or(x);
+ }
+
+ protected QueryCondition<T, Short> or(short x) {
+ return where.or(x);
+ }
+
+ protected QueryCondition<T, Integer> or(int x) {
+ return where.or(x);
+ }
+
+ protected QueryCondition<T, Long> or(long x) {
+ return where.or(x);
+ }
+
+ protected QueryCondition<T, Float> or(float x) {
+ return where.or(x);
+ }
+
+ protected QueryCondition<T, Double> or(double x) {
+ return where.or(x);
+ }
+
+ protected <A> QueryCondition<T, A> or(A x) {
+ return where.or(x);
+ }
+
+ protected QueryWhere<T> or(And<T> conditions) {
+ where.orOpenTrue();
+ where.query.addConditionToken(conditions.where.query);
+ return where.close();
+ }
+
+ protected QueryWhere<T> or(Or<T> conditions) {
+ where.orOpenFalse();
+ where.query.addConditionToken(conditions.where.query);
+ return where.close();
+ }
+
+ }
+
+ QueryWhere<T> where;
+
+ private Conditions(Db db, T alias) {
+ where = new QueryWhere<T>(Query.rebuild(db, alias));
+ }
+
+}