Github user meiercaleb commented on a diff in the pull request:
https://github.com/apache/incubator-rya/pull/161#discussion_r123546312
--- Diff:
extras/rya.pcj.fluo/pcj.fluo.app/src/main/java/org/apache/rya/indexing/pcj/fluo/app/query/ConstructQueryMetadata.java
---
@@ -0,0 +1,192 @@
+package org.apache.rya.indexing.pcj.fluo.app.query;
+
+/*
+ * 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.
+ */
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.rya.indexing.pcj.fluo.app.ConstructGraph;
+import org.apache.rya.indexing.pcj.storage.accumulo.VariableOrder;
+import org.openrdf.query.BindingSet;
+
+import com.google.common.base.Objects;
+import com.google.common.base.Preconditions;
+
+import edu.umd.cs.findbugs.annotations.DefaultAnnotation;
+import edu.umd.cs.findbugs.annotations.NonNull;
+
+/**
+ * Metadata object used to store metadata for Construct Query Nodes found
in
+ * SPARQL queries.
+ *
+ */
+public class ConstructQueryMetadata extends CommonNodeMetadata {
+
+ private String childNodeId;
+ private ConstructGraph graph;
+ private String sparql;
+
+ /**
+ * Creates ConstructQueryMetadata object from the provided metadata
arguments.
+ * @param nodeId - id for the ConstructQueryNode
+ * @param childNodeId - id for the child of the ConstructQueryNode
+ * @param graph - {@link ConstructGraph} used to project {@link
BindingSet}s onto sets of statement representing construct graph
+ * @param sparql - SPARQL query containing construct graph
+ */
+ public ConstructQueryMetadata(String nodeId, String childNodeId,
ConstructGraph graph, String sparql) {
+ super(nodeId, new VariableOrder("subject", "predicate", "object"));
+ Preconditions.checkNotNull(childNodeId);
+ Preconditions.checkNotNull(graph);
+ Preconditions.checkNotNull(sparql);
+ this.childNodeId = childNodeId;
+ this.graph = graph;
+ this.sparql = sparql;
+ }
+
+ /**
+ * @return sparql query string representing this construct query
+ */
+ public String getSparql() {
+ return sparql;
+ }
+
+ /**
+ * @return The node whose results are projected onto the given
+ * {@link ConstructGraph}.
+ */
+ public String getChildNodeId() {
+ return childNodeId;
+ }
+
+ /**
+ * @return The ConstructGraph used to form statement {@link
BindingSet}s for
+ * this Construct Query
+ */
+ public ConstructGraph getConstructGraph() {
+ return graph;
+ }
+
+ @Override
+ public int hashCode() {
+ return Objects.hashCode(super.getNodeId(),
super.getVariableOrder(), childNodeId, graph, sparql);
+ }
+
+ @Override
+ public boolean equals(final Object o) {
+ if (this == o) {
+ return true;
+ }
+
+ if (o instanceof ConstructQueryMetadata) {
+ ConstructQueryMetadata queryMetadata =
(ConstructQueryMetadata) o;
+ if (super.equals(queryMetadata)) {
+ return new EqualsBuilder().append(childNodeId,
queryMetadata.childNodeId).append(graph, queryMetadata.graph)
+ .append(sparql, queryMetadata.sparql).isEquals();
+ }
+ return false;
+ }
+ return false;
+ }
+
+ @Override
+ public String toString() {
+ return new StringBuilder().append("Construct Query Metadata
{\n").append(" Node ID: " + super.getNodeId() + "\n")
--- End diff --
Okay. I'll keep it in mind in the future.
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