[GitHub] pavlukhin commented on a change in pull request #5774: IGNITE-10307

[GitBox <gi...@apache.org>]

pavlukhin commented on a change in pull request #5774: IGNITE-10307
URL: https://github.com/apache/ignite/pull/5774#discussion_r246698247
 
 

 ##########
 File path: modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/affinity/PartitionTable.java
 ##########
 @@ -0,0 +1,119 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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 org.apache.ignite.internal.processors.query.h2.affinity;
+
+import org.apache.ignite.internal.util.typedef.F;
+import org.apache.ignite.internal.util.typedef.internal.S;
+import org.jetbrains.annotations.Nullable;
+
+/**
+ * Single table with affinity info.
+ */
+public class PartitionTable {
+    /** Alias used in the query. */
+    private final String alias;
+
+    /** Cache name. */
+    private final String cacheName;
+
+    /** Affinity column name (if can be resolved). */
+    private final String affColName;
+
+    /** Second affinity column name (possible when _KEY is affinity column and an alias for this column exists. */
+    private final String secondAffColName;
+
+    /** Join group index. */
+    private int joinGrp;
+
+    /**
+     * Constructor.
+     *
+     * @param alias Unique alias.
+     * @param cacheName Cache name.
+     * @param affColName Affinity column name.
+     * @param secondAffColName Second affinity column name.
+     */
+    public PartitionTable(
+        String alias,
+        String cacheName,
+        @Nullable String affColName,
+        @Nullable String secondAffColName
+    ) {
+        this.alias = alias;
+        this.cacheName = cacheName;
+
+        if (affColName == null && secondAffColName != null) {
+            this.affColName = secondAffColName;
+            this.secondAffColName = null;
+        }
+        else {
+            this.affColName = affColName;
+            this.secondAffColName = secondAffColName;
+        }
+    }
+
+    /**
+     * @return Alias.
+     */
+    public String alias() {
+        return alias;
+    }
+
+    /**
+     * @return Cache name.
+     */
+    public String cacheName() {
+        return cacheName;
+    }
+
+    /**
+     * @return {@code True} if affinity oclumn exists.
+     */
+    public boolean hasAffinityColumn() {
+        return affColName != null;
+    }
+
+    /**
+     * Check whether passed column is affinity column.
+     *
+     * @param colName Column name.
+     * @return {@code True} if affinity column.
+     */
+    public boolean isAffinityColumn(String colName) {
+        return F.eq(colName, affColName) || F.eq(colName, secondAffColName);
+    }
+
+    /**
+     * @return Join group index.
+     */
+    public int joinGroup() {
+        return joinGrp;
+    }
+
+    /**
+     * @param joinGrp Join group index.
+     */
+    public void joinGorup(int joinGrp) {
 
 Review comment:
   `Gorup` -> `Group`

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