1 files changed, 75 insertions, 0 deletions
diff --git a/src/main/java/com/iciql/QueryJoin.java b/src/main/java/com/iciql/QueryJoin.java
new file mode 100644
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+++ b/src/main/java/com/iciql/QueryJoin.java
@@ -0,0 +1,75 @@
+/*
+ * 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;
+
+/**
+ * This class represents a query with a join.
+ */
+
+public class QueryJoin<T> {
+
+	private Query<T> query;
+	private SelectTable<T> join;
+
+	QueryJoin(Query<T> query, SelectTable<T> join) {
+		this.query = query;
+		this.join = join;
+	}
+
+	public QueryJoinCondition<T, Boolean> on(boolean x) {
+		query.getFrom().getAliasDefinition().checkMultipleBooleans();
+		return addPrimitive(x);
+	}
+
+	public QueryJoinCondition<T, Byte> on(byte x) {
+		return addPrimitive(x);
+	}
+
+	public QueryJoinCondition<T, Short> on(short x) {
+		return addPrimitive(x);
+	}
+
+	public QueryJoinCondition<T, Integer> on(int x) {
+		return addPrimitive(x);
+	}
+
+	public QueryJoinCondition<T, Long> on(long x) {
+		return addPrimitive(x);
+	}
+
+	public QueryJoinCondition<T, Float> on(float x) {
+		return addPrimitive(x);
+	}
+
+	public QueryJoinCondition<T, Double> on(double x) {
+		return addPrimitive(x);
+	}
+
+	private <A> QueryJoinCondition<T, A> addPrimitive(A x) {
+		A alias = query.getPrimitiveAliasByValue(x);
+		if (alias == null) {
+			// this will result in an unmapped field exception
+			return new QueryJoinCondition<T, A>(query, join, x);
+		}
+		return new QueryJoinCondition<T, A>(query, join, alias);
+	}
+
+	public <A> QueryJoinCondition<T, A> on(A x) {
+		return new QueryJoinCondition<T, A>(query, join, x);
+	}
+}