Github user lewismc commented on a diff in the pull request:
https://github.com/apache/gora/pull/134#discussion_r202526771
--- Diff:
gora-ignite/src/main/java/org/apache/gora/ignite/store/IgniteMappingBuilder.java
---
@@ -0,0 +1,109 @@
+/**
+ * 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.gora.ignite.store;
+
+import com.google.inject.ConfigurationException;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import org.apache.gora.persistency.impl.PersistentBase;
+import org.jdom.Document;
+import org.jdom.Element;
+import org.jdom.JDOMException;
+import org.jdom.input.SAXBuilder;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Builder for Mapping definitions of Ignite.
+ */
+public class IgniteMappingBuilder<K, T extends PersistentBase> {
+
+ private static final Logger LOG =
LoggerFactory.getLogger(IgniteMappingBuilder.class);
+ /**
+ * Mapping instance being built
+ */
+ private IgniteMapping igniteMapping;
+
+ private final IgniteStore<K, T> dataStore;
+
+ public IgniteMappingBuilder(final IgniteStore<K, T> store) {
+ this.igniteMapping = new IgniteMapping();
+ this.dataStore = store;
+ }
+
+ public IgniteMapping getIgniteMapping() {
+ return igniteMapping;
+ }
+
+ public void setIgniteMapping(IgniteMapping igniteMapping) {
+ this.igniteMapping = igniteMapping;
+ }
+
+ public void readMappingFile(String mappingFile) {
+ try {
+ SAXBuilder saxBuilder = new SAXBuilder();
+ InputStream inputStream =
getClass().getClassLoader().getResourceAsStream(mappingFile);
+ if (inputStream == null) {
+ LOG.error("Mapping file '{}' could not be found!", mappingFile);
+ throw new IOException("Mapping file '" + mappingFile + "' could
not be found!");
+ }
+ Document document = saxBuilder.build(inputStream);
+ if (document == null) {
+ LOG.error("Mapping file '{}' could not be found!", mappingFile);
+ throw new IOException("Mapping file '" + mappingFile + "' could
not be found!");
+ }
+ List<Element> classes =
document.getRootElement().getChildren("class");
+ for (Element classElement : classes) {
+ if (classElement.getAttributeValue("keyClass").equals(
+ dataStore.getKeyClass().getCanonicalName())
+ && classElement.getAttributeValue("name").equals(
+ dataStore.getPersistentClass().getCanonicalName())) {
+ final String tableNameFromMapping =
classElement.getAttributeValue("table");
+ String tableName = dataStore.getSchemaName(tableNameFromMapping,
dataStore.getPersistentClass());
+ igniteMapping.setTableName(tableName);
+ List<Element> prColumns = classElement.getChildren("primarykey");
+ List<Column> prFields = new ArrayList<>();
+ for (Element aPrimaryKey : prColumns) {
+ String name = aPrimaryKey.getAttributeValue("column");
+ String type = aPrimaryKey.getAttributeValue("type");
+ prFields.add(new Column(name, Column.FieldType.valueOf(type)));
+ }
+ igniteMapping.setPrimaryKey(prFields);
+ List<Element> fields = classElement.getChildren("field");
--- End diff --
Type safety: The expression of type List needs unchecked conversion to
conform to List < Element >
---
