Github user meiercaleb commented on a diff in the pull request:
https://github.com/apache/incubator-rya/pull/240#discussion_r145811379
--- Diff:
extras/rya.pcj.fluo/pcj.fluo.app/src/main/java/org/apache/rya/indexing/pcj/fluo/app/query/StateNodeMetadata.java
---
@@ -0,0 +1,91 @@
+/*
+ * 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.rya.indexing.pcj.fluo.app.query;
+
+import java.util.Optional;
+
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.rya.indexing.pcj.storage.accumulo.VariableOrder;
+
+import com.google.common.base.Objects;
+
+/**
+ * Metadata class that is meant to be extended by any metadata node that
could have Aggregation State.
+ *
+ */
+public class StateNodeMetadata extends CommonNodeMetadata {
+
+ private Optional<CommonNodeMetadataImpl> stateMetadata;
+
+ /**
+ * Creates a StateNodeMetadata object with empty aggregation metadata.
+ * @param nodeId
+ * @param varOrder
+ */
+ public StateNodeMetadata(String nodeId, VariableOrder varOrder) {
+ this(nodeId, varOrder, Optional.empty());
+ }
+
+ /**
+ * Creates a StateNodeMetadata object with indicated aggregation
metadata.
+ * @param nodeId
+ * @param varOrder
+ * @param aggregationStateMetadata - aggregation metadata to look up
aggregation state
+ */
+ public StateNodeMetadata(String nodeId, VariableOrder varOrder,
Optional<CommonNodeMetadataImpl> aggregationStateMetadata) {
+ super(nodeId, varOrder);
+ this.stateMetadata = aggregationStateMetadata;
+ }
+
+ /**
+ * @return - Optional containing aggregation metadata to look up
aggregation state (if it exists)
+ */
+ public Optional<CommonNodeMetadataImpl> getStateMetadata() {
+ return stateMetadata;
+ }
+
+ @Override
+ public int hashCode() {
+ return Objects.hashCode(super.getNodeId(),
super.getVariableOrder(), stateMetadata);
+ }
+
+ @Override
+ public boolean equals(final Object o) {
+ if (this == o) {
+ return true;
+ }
+
+ if (o instanceof StateNodeMetadata) {
+ if (super.equals(o)) {
+ final StateNodeMetadata metadata = (StateNodeMetadata) o;
+ return new EqualsBuilder().append(stateMetadata,
metadata.stateMetadata).isEquals();
--- End diff --
Done
---
