[
https://issues.apache.org/jira/browse/GORA-535?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16585840#comment-16585840
]
ASF GitHub Bot commented on GORA-535:
-------------------------------------
Github user djkevincr commented on a diff in the pull request:
https://github.com/apache/gora/pull/134#discussion_r211230897
--- Diff:
gora-ignite/src/main/java/org/apache/gora/ignite/store/IgniteMappingBuilder.java
---
@@ -0,0 +1,112 @@
+/*
+ * 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!");
+ }
+ @SuppressWarnings("unchecked")
+ 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);
+ @SuppressWarnings("unchecked")
+ 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);
+ @SuppressWarnings("unchecked")
+ List<Element> fields = classElement.getChildren("field");
+ Map<String, Column> mp = new HashMap<>();
+ for (Element field : fields) {
+ String fieldName = field.getAttributeValue("name");
+ String columnName = field.getAttributeValue("column");
+ String columnType = field.getAttributeValue("type");
+ mp.put(fieldName, new Column(columnName,
Column.FieldType.valueOf(columnType)));
+ }
+ igniteMapping.setFields(mp);
+ break;
+ }
+ }
+
+ } catch (IOException | JDOMException | ConfigurationException e) {
+ throw new RuntimeException(e);
+ }
+ LOG.info("Gora Ignite mapping file was read successfully.");
+
--- End diff --
Please remove new lines.
> Add a data store for Apache Ignite
> -----------------------------------
>
> Key: GORA-535
> URL: https://issues.apache.org/jira/browse/GORA-535
> Project: Apache Gora
> Issue Type: New Feature
> Reporter: Nishadi Kirielle
> Priority: Major
> Labels: gsoc2018
>
> Currently, Gora has support for persisting objects to various database models
> such as Apache Hbase, Apache Cassandra and much more. [1] This project aims
> to extend its capability to provide support for Apache Ignite database.
> Apache Ignite is a distributed database, caching and processing platform.[2]
> [1]. [http://gora.apache.org/]
> [2] . [https://ignite.apache.org/]
>
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