1 files changed, 60 insertions, 0 deletions
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/resourcemgr/config/selectors/ComplexSelectors.java b/exec/java-exec/src/main/java/org/apache/drill/exec/resourcemgr/config/selectors/ComplexSelectors.java
new file mode 100644
index 000000000..fe9ab52ae
--- /dev/null
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/resourcemgr/config/selectors/ComplexSelectors.java
@@ -0,0 +1,60 @@
+/*
+ * 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.drill.exec.resourcemgr.config.selectors;
+
+import com.typesafe.config.Config;
+import org.apache.drill.exec.ops.QueryContext;
+import org.apache.drill.exec.resourcemgr.config.exception.RMConfigException;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public abstract class ComplexSelectors extends AbstractResourcePoolSelector {
+
+  protected final List<ResourcePoolSelector> childSelectors = new ArrayList<>();
+
+  ComplexSelectors(SelectorType type, List<? extends Config> selectorConfig) throws RMConfigException {
+    super(type);
+    parseAndCreateChildSelectors(selectorConfig);
+  }
+
+  private void parseAndCreateChildSelectors(List<? extends Config> childConfigs) throws RMConfigException {
+    for (Config childConfig : childConfigs) {
+      childSelectors.add(ResourcePoolSelectorFactory.createSelector(childConfig));
+    }
+
+    if (childSelectors.size() < 2) {
+      throw new RMConfigException(String.format("For complex selector OR and AND it is expected to have atleast 2 " +
+        "selectors in the list but found %d", childSelectors.size()));
+    }
+  }
+
+  public abstract boolean isQuerySelected(QueryContext queryContext);
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("{ SelectorType: ").append(super.toString());
+    sb.append(", of selectors [");
+    for (ResourcePoolSelector childSelector : childSelectors) {
+      sb.append(childSelector.toString()).append(", ");
+    }
+    sb.append("]}");
+    return sb.toString();
+  }
+}