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#117 Implemented mapping ODML objects into ElasticSearch. Finally.
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rinkesj
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Jul 2, 2015
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43 changes: 43 additions & 0 deletions
43
src/main/java/cz/zcu/kiv/eegdatabase/wui/core/experiments/metadata/CustomEntityMapper.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,43 @@ | ||
| package cz.zcu.kiv.eegdatabase.wui.core.experiments.metadata; | ||
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| import java.io.IOException; | ||
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| import odml.core.Section; | ||
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| import org.apache.commons.logging.Log; | ||
| import org.apache.commons.logging.LogFactory; | ||
| import org.codehaus.jackson.Version; | ||
| import org.codehaus.jackson.map.DeserializationConfig.Feature; | ||
| import org.codehaus.jackson.map.ObjectMapper; | ||
| import org.codehaus.jackson.map.module.SimpleModule; | ||
| import org.springframework.data.elasticsearch.core.EntityMapper; | ||
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| public class CustomEntityMapper implements EntityMapper { | ||
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| protected Log log = LogFactory.getLog(getClass()); | ||
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| private ObjectMapper objectMapper; | ||
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| public CustomEntityMapper() { | ||
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| objectMapper = new ObjectMapper(); | ||
| objectMapper.configure(Feature.FAIL_ON_UNKNOWN_PROPERTIES, false); | ||
| // objectMapper.configure(Feature.ACCEPT_SINGLE_VALUE_AS_ARRAY, true); need it ??? don't know now. | ||
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| SimpleModule module = new SimpleModule("section", Version.unknownVersion()); | ||
| module.addSerializer(Section.class, new ODMLSectionSerializer()); | ||
| module.addDeserializer(Section.class, new ODMLSectionDeserializer()); | ||
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| objectMapper.registerModule(module); | ||
| } | ||
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| @Override | ||
| public String mapToString(Object object) throws IOException { | ||
| return objectMapper.writeValueAsString(object); | ||
| } | ||
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| @Override | ||
| public <T> T mapToObject(String source, Class<T> clazz) throws IOException { | ||
| return objectMapper.readValue(source, clazz); | ||
| } | ||
| } |
79 changes: 79 additions & 0 deletions
79
...in/java/cz/zcu/kiv/eegdatabase/wui/core/experiments/metadata/ODMLSectionDeserializer.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,79 @@ | ||
| package cz.zcu.kiv.eegdatabase.wui.core.experiments.metadata; | ||
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| import java.io.ByteArrayInputStream; | ||
| import java.io.IOException; | ||
| import java.io.StringWriter; | ||
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| import javax.xml.parsers.DocumentBuilder; | ||
| import javax.xml.parsers.DocumentBuilderFactory; | ||
| import javax.xml.transform.Transformer; | ||
| import javax.xml.transform.TransformerException; | ||
| import javax.xml.transform.TransformerFactory; | ||
| import javax.xml.transform.dom.DOMSource; | ||
| import javax.xml.transform.stream.StreamResult; | ||
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| import odml.core.Reader; | ||
| import odml.core.Section; | ||
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| import org.apache.commons.logging.Log; | ||
| import org.apache.commons.logging.LogFactory; | ||
| import org.apache.wicket.ajax.json.JSONException; | ||
| import org.apache.wicket.ajax.json.JSONObject; | ||
| import org.apache.wicket.ajax.json.XML; | ||
| import org.codehaus.jackson.JsonParser; | ||
| import org.codehaus.jackson.JsonProcessingException; | ||
| import org.codehaus.jackson.map.DeserializationContext; | ||
| import org.codehaus.jackson.map.JsonDeserializer; | ||
| import org.w3c.dom.Document; | ||
| import org.w3c.dom.Element; | ||
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| public class ODMLSectionDeserializer extends JsonDeserializer<Section> { | ||
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| protected Log log = LogFactory.getLog(getClass()); | ||
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| @Override | ||
| public Section deserialize(JsonParser jp, DeserializationContext ctxt) throws IOException, JsonProcessingException { | ||
| long start = System.currentTimeMillis(); | ||
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| try { | ||
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| String jsonString = jp.getCodec().readTree(jp).toString(); | ||
| JSONObject jsonObject = new JSONObject(jsonString); | ||
| String xmlString = XML.toString(jsonObject); | ||
| Reader reader = new Reader(); | ||
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| ByteArrayInputStream stream = new ByteArrayInputStream(xmlString.getBytes()); | ||
| DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance(); | ||
| DocumentBuilder dbuilder = dbf.newDocumentBuilder(); | ||
| Document dom = dbuilder.parse(stream); | ||
| Element rootElement = dom.getDocumentElement(); | ||
| rootElement.setAttribute("version", "1.0"); | ||
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| stream = new ByteArrayInputStream(getStringFromDocument(dom).getBytes()); | ||
| return reader.load(stream); | ||
| } catch (JSONException e) { | ||
| log.warn(e.getMessage(), e); | ||
| } catch (Exception e) { | ||
| log.warn(e.getMessage(), e); | ||
| } finally { | ||
| long end = System.currentTimeMillis(); | ||
| log.warn("Deserialize time - " + (end - start) + " ms."); | ||
| } | ||
| return null; | ||
| } | ||
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| public String getStringFromDocument(Document doc) { | ||
| try { | ||
| DOMSource domSource = new DOMSource(doc); | ||
| StringWriter writer = new StringWriter(); | ||
| StreamResult result = new StreamResult(writer); | ||
| TransformerFactory tf = TransformerFactory.newInstance(); | ||
| Transformer transformer = tf.newTransformer(); | ||
| transformer.transform(domSource, result); | ||
| return writer.toString(); | ||
| } catch (TransformerException e) { | ||
| log.warn(e.getMessage(), e); | ||
| return ""; | ||
| } | ||
| } | ||
| } |
47 changes: 47 additions & 0 deletions
47
...main/java/cz/zcu/kiv/eegdatabase/wui/core/experiments/metadata/ODMLSectionSerializer.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,47 @@ | ||
| package cz.zcu.kiv.eegdatabase.wui.core.experiments.metadata; | ||
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| import java.io.ByteArrayOutputStream; | ||
| import java.io.IOException; | ||
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| import odml.core.Section; | ||
| import odml.core.Writer; | ||
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| import org.apache.commons.logging.Log; | ||
| import org.apache.commons.logging.LogFactory; | ||
| import org.apache.wicket.ajax.json.JSONException; | ||
| import org.apache.wicket.ajax.json.JSONObject; | ||
| import org.apache.wicket.ajax.json.XML; | ||
| import org.codehaus.jackson.JsonGenerator; | ||
| import org.codehaus.jackson.JsonProcessingException; | ||
| import org.codehaus.jackson.map.JsonSerializer; | ||
| import org.codehaus.jackson.map.SerializerProvider; | ||
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| public class ODMLSectionSerializer extends JsonSerializer<Section> { | ||
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| protected Log log = LogFactory.getLog(getClass()); | ||
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| @Override | ||
| public void serialize(Section value, JsonGenerator jgen, SerializerProvider provider) throws IOException, JsonProcessingException { | ||
| long start = System.currentTimeMillis(); | ||
| try { | ||
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| Writer wr = new Writer(value, true, false); | ||
| ByteArrayOutputStream stream = new ByteArrayOutputStream(); | ||
| wr.write(stream, false, false); | ||
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| String xmlString = stream.toString("UTF-8"); | ||
| JSONObject jsonObject = XML.toJSONObject(xmlString); | ||
| String jsonString = jsonObject.toString(); | ||
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| jgen.writeRawValue(jsonString); | ||
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| } catch (JSONException e) { | ||
| log.error(e.getMessage(), e); | ||
| } finally { | ||
| long end = System.currentTimeMillis(); | ||
| log.error("Serialize time - " + (end - start) + " ms."); | ||
| } | ||
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| } | ||
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| } |
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