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Posted to commits@sling.apache.org by ol...@apache.org on 2015/03/19 23:46:44 UTC

svn commit: r1667896 - in /sling/trunk/samples/org.apache.sling.samples.jcr.contentloader: ./ src/ src/main/ src/main/java/ src/main/java/org/ src/main/java/org/apache/ src/main/java/org/apache/sling/ src/main/java/org/apache/sling/samples/ src/main/ja...

Author: olli
Date: Thu Mar 19 22:46:43 2015
New Revision: 1667896

URL: http://svn.apache.org/r1667896
Log:
SLING-4526 add sample for custom content readers

Added:
    sling/trunk/samples/org.apache.sling.samples.jcr.contentloader/
    sling/trunk/samples/org.apache.sling.samples.jcr.contentloader/README.md
    sling/trunk/samples/org.apache.sling.samples.jcr.contentloader/pom.xml
    sling/trunk/samples/org.apache.sling.samples.jcr.contentloader/src/
    sling/trunk/samples/org.apache.sling.samples.jcr.contentloader/src/main/
    sling/trunk/samples/org.apache.sling.samples.jcr.contentloader/src/main/java/
    sling/trunk/samples/org.apache.sling.samples.jcr.contentloader/src/main/java/org/
    sling/trunk/samples/org.apache.sling.samples.jcr.contentloader/src/main/java/org/apache/
    sling/trunk/samples/org.apache.sling.samples.jcr.contentloader/src/main/java/org/apache/sling/
    sling/trunk/samples/org.apache.sling.samples.jcr.contentloader/src/main/java/org/apache/sling/samples/
    sling/trunk/samples/org.apache.sling.samples.jcr.contentloader/src/main/java/org/apache/sling/samples/jcr/
    sling/trunk/samples/org.apache.sling.samples.jcr.contentloader/src/main/java/org/apache/sling/samples/jcr/contentloader/
    sling/trunk/samples/org.apache.sling.samples.jcr.contentloader/src/main/java/org/apache/sling/samples/jcr/contentloader/internal/
    sling/trunk/samples/org.apache.sling.samples.jcr.contentloader/src/main/java/org/apache/sling/samples/jcr/contentloader/internal/GsonReader.java

Added: sling/trunk/samples/org.apache.sling.samples.jcr.contentloader/README.md
URL: http://svn.apache.org/viewvc/sling/trunk/samples/org.apache.sling.samples.jcr.contentloader/README.md?rev=1667896&view=auto
==============================================================================
--- sling/trunk/samples/org.apache.sling.samples.jcr.contentloader/README.md (added)
+++ sling/trunk/samples/org.apache.sling.samples.jcr.contentloader/README.md Thu Mar 19 22:46:43 2015
@@ -0,0 +1,4 @@
+Sling JCR Content Loader Sample
+===============================
+
+Basic sample to show how to provide a custom content reader and use it instead of the default one for JSON.

Added: sling/trunk/samples/org.apache.sling.samples.jcr.contentloader/pom.xml
URL: http://svn.apache.org/viewvc/sling/trunk/samples/org.apache.sling.samples.jcr.contentloader/pom.xml?rev=1667896&view=auto
==============================================================================
--- sling/trunk/samples/org.apache.sling.samples.jcr.contentloader/pom.xml (added)
+++ sling/trunk/samples/org.apache.sling.samples.jcr.contentloader/pom.xml Thu Mar 19 22:46:43 2015
@@ -0,0 +1,117 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+    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.
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+
+  <modelVersion>4.0.0</modelVersion>
+
+  <parent>
+    <groupId>org.apache.sling</groupId>
+    <artifactId>sling</artifactId>
+    <version>22</version>
+    <relativePath>../../parent/pom.xml</relativePath>
+  </parent>
+
+  <groupId>org.apache.sling.samples</groupId>
+  <artifactId>org.apache.sling.samples.jcr.contentloader</artifactId>
+  <version>0.0.1-SNAPSHOT</version>
+  <packaging>bundle</packaging>
+
+  <name>Apache Sling JCR Content Loader Sample</name>
+  <description>sample providing custom reader for Sling JCR Content Loader</description>
+
+  <properties>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
+    <sling.java.version>7</sling.java.version>
+  </properties>
+
+  <dependencies>
+    <!-- javax -->
+    <dependency>
+      <groupId>javax.jcr</groupId>
+      <artifactId>jcr</artifactId>
+      <scope>provided</scope>
+    </dependency>
+    <!-- OSGi -->
+    <dependency>
+      <groupId>org.osgi</groupId>
+      <artifactId>org.osgi.core</artifactId>
+      <version>4.3.1</version>
+      <scope>provided</scope>
+    </dependency>
+    <dependency>
+      <groupId>org.osgi</groupId>
+      <artifactId>org.osgi.compendium</artifactId>
+      <version>4.3.1</version>
+      <scope>provided</scope>
+    </dependency>
+    <!-- Apache Commons -->
+    <dependency>
+      <groupId>commons-io</groupId>
+      <artifactId>commons-io</artifactId>
+      <version>2.4</version>
+      <scope>provided</scope>
+    </dependency>
+    <!-- Apache Sling -->
+    <dependency>
+      <groupId>org.apache.sling</groupId>
+      <artifactId>org.apache.sling.jcr.contentloader</artifactId>
+      <version>2.1.11-SNAPSHOT</version>
+      <scope>provided</scope>
+    </dependency>
+    <!-- Google Gson -->
+    <dependency>
+      <groupId>com.google.code.gson</groupId>
+      <artifactId>gson</artifactId>
+      <version>2.3.1</version>
+      <scope>provided</scope>
+    </dependency>
+    <!-- logging -->
+    <dependency>
+      <groupId>org.slf4j</groupId>
+      <artifactId>slf4j-api</artifactId>
+      <scope>provided</scope>
+    </dependency>
+  </dependencies>
+
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-compiler-plugin</artifactId>
+        <version>3.1</version>
+        <configuration>
+          <source>1.7</source>
+          <target>1.7</target>
+        </configuration>
+      </plugin>
+      <plugin>
+        <groupId>org.apache.felix</groupId>
+        <artifactId>maven-bundle-plugin</artifactId>
+        <extensions>true</extensions>
+      </plugin>
+      <plugin>
+        <groupId>org.apache.felix</groupId>
+        <artifactId>maven-scr-plugin</artifactId>
+      </plugin>
+    </plugins>
+  </build>
+
+</project>

Added: sling/trunk/samples/org.apache.sling.samples.jcr.contentloader/src/main/java/org/apache/sling/samples/jcr/contentloader/internal/GsonReader.java
URL: http://svn.apache.org/viewvc/sling/trunk/samples/org.apache.sling.samples.jcr.contentloader/src/main/java/org/apache/sling/samples/jcr/contentloader/internal/GsonReader.java?rev=1667896&view=auto
==============================================================================
--- sling/trunk/samples/org.apache.sling.samples.jcr.contentloader/src/main/java/org/apache/sling/samples/jcr/contentloader/internal/GsonReader.java (added)
+++ sling/trunk/samples/org.apache.sling.samples.jcr.contentloader/src/main/java/org/apache/sling/samples/jcr/contentloader/internal/GsonReader.java Thu Mar 19 22:46:43 2015
@@ -0,0 +1,140 @@
+/*
+ * 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.sling.samples.jcr.contentloader.internal;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.Reader;
+import java.net.URL;
+import java.nio.charset.StandardCharsets;
+
+import javax.jcr.PropertyType;
+import javax.jcr.RepositoryException;
+
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
+import com.google.gson.JsonObject;
+import org.apache.commons.io.IOUtils;
+import org.apache.felix.scr.annotations.Activate;
+import org.apache.felix.scr.annotations.Component;
+import org.apache.felix.scr.annotations.Deactivate;
+import org.apache.felix.scr.annotations.Modified;
+import org.apache.felix.scr.annotations.Properties;
+import org.apache.felix.scr.annotations.Property;
+import org.apache.felix.scr.annotations.PropertyUnbounded;
+import org.apache.felix.scr.annotations.Service;
+import org.apache.sling.jcr.contentloader.BaseContentReader;
+import org.apache.sling.jcr.contentloader.ContentCreator;
+import org.apache.sling.jcr.contentloader.ContentReader;
+import org.osgi.framework.Constants;
+import org.osgi.service.component.ComponentContext;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+@Component(
+    label = "Apache Sling JCR Content Loader Sample GsonReader",
+    description = "parses JSON content with Gson",
+    immediate = true,
+    metatype = true
+)
+@Service
+@Properties({
+    @Property(
+        name = Constants.SERVICE_VENDOR,
+        value = "The Apache Software Foundation"
+    ),
+    @Property(
+        name = Constants.SERVICE_DESCRIPTION,
+        value = "Apache Sling JCR Content Loader Sample GsonReader"
+    ),
+    @Property(
+        name = ContentReader.PROPERTY_EXTENSIONS,
+        value = {
+            "json"
+        },
+        unbounded = PropertyUnbounded.ARRAY
+    ),
+    @Property(
+        name = ContentReader.PROPERTY_CONTENTTYPES,
+        value = {
+            "application/json"
+        },
+        unbounded = PropertyUnbounded.ARRAY
+    ),
+    @Property(
+        name = Constants.SERVICE_RANKING,
+        intValue = 1,
+        propertyPrivate = false
+    )
+})
+public final class GsonReader extends BaseContentReader implements ContentReader {
+
+    private GsonBuilder gsonBuilder;
+
+    private final Logger logger = LoggerFactory.getLogger(GsonReader.class);
+
+    public GsonReader() {
+    }
+
+    @Activate
+    protected void activate(final ComponentContext componentContext) {
+        configure(componentContext);
+        gsonBuilder = new GsonBuilder();
+    }
+
+    @Modified
+    protected void modified(final ComponentContext componentContext) {
+        configure(componentContext);
+    }
+
+    @Deactivate
+    protected void deactivate(final ComponentContext componentContext) {
+        extensions = null;
+        contentTypes = null;
+        gsonBuilder = null;
+    }
+
+    @Override
+    public void parse(final URL url, final ContentCreator contentCreator) throws IOException, RepositoryException {
+        InputStream inputStream = null;
+        try {
+            inputStream = url.openStream();
+            parse(inputStream, contentCreator);
+        } finally {
+            IOUtils.closeQuietly(inputStream);
+        }
+    }
+
+    /**
+     * TODO well, implement real parsing...
+     */
+    @Override
+    public void parse(final InputStream inputStream, final ContentCreator contentCreator) throws IOException, RepositoryException {
+        final Gson gson = gsonBuilder.create();
+        final Reader reader = new InputStreamReader(inputStream, StandardCharsets.UTF_8);
+        final JsonObject jsonObject = gson.fromJson(reader, JsonObject.class);
+        final String json = jsonObject.toString();
+        logger.debug("json: {}", json);
+        contentCreator.createNode(null, "nt:unstructured", null);
+        contentCreator.createProperty("json", PropertyType.STRING, json);
+        contentCreator.finishNode();
+    }
+
+}