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Inversion of Control Framework for Android
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package net.sf.andromedaioc.model.builder.xml;
import net.sf.andromedaioc.exception.XmlParseException;
import net.sf.andromedaioc.model.beans.*;
import net.sf.andromedaioc.model.provider.Provider;
import net.sf.andromedaioc.resource.ResourceProvider;
import net.sf.andromedaioc.util.XmlUtils;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import java.io.ByteArrayInputStream;
import java.io.CharArrayReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.nio.*;
import java.util.*;
public class XmlContextBeansProvider implements Provider> {
private final String xmlContext;
private final ResourceProvider resourceProvider;
private final Provider generatedBeanIdProvider;
private final Map beans;
public XmlContextBeansProvider(String xmlContext, ResourceProvider resourceProvider, Provider generatedBeanIdProvider) {
this.xmlContext = xmlContext;
this.resourceProvider = resourceProvider;
this.generatedBeanIdProvider = generatedBeanIdProvider;
beans = new HashMap();
}
public Map provide() {
try {
ByteArrayInputStream xmlStream = readXml();
// TODO: problem with xsd validation for android, so have to disable it
// validateXmlResource(xmlStream);
xmlStream.reset();
parseXmlResource(xmlStream);
return beans;
} catch(Exception e) {
throw new XmlParseException(String.format("Error parsing xml context. Reason: %s", e.getMessage()), e);
}
}
private ByteArrayInputStream readXml() {
InputStream contextResource = null;
try {
contextResource = (InputStream) resourceProvider.getResource(xmlContext);
byte[] buffer = new byte[1000];
int bytesRead;
byte[] result = new byte[0];
while((bytesRead = contextResource.read(buffer, 0, 1000)) >= 0) {
int currentResultLength = result.length;
byte[] newResult = new byte[currentResultLength + bytesRead];
System.arraycopy(result, 0, newResult, 0, currentResultLength);
System.arraycopy(buffer, 0, newResult, currentResultLength, bytesRead);
result = newResult;
}
return new ByteArrayInputStream(result);
} catch(Exception e) {
throw new XmlParseException(String.format("Error parsing xml context. Reason: %s", e.getMessage()), e);
} finally {
if(contextResource != null) {
try {
contextResource.close();
} catch(Exception e) {
throw new RuntimeException(String.format("Failed close xml context stream. Reason: %s", e.getMessage()), e);
}
}
}
}
private void validateXmlResource(InputStream resource) throws Exception {
AndromedaXmlValidator validator = new AndromedaXmlValidator();
validator.validate(resource);
}
private void parseXmlResource(InputStream resource) throws Exception {
DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
Document doc = dBuilder.parse(resource);
doc.getDocumentElement().normalize();
Element element = doc.getDocumentElement();
if(!XmlContextElement.BEANS.getName().equals(element.getTagName())) {
throw new XmlParseException("No root document element found");
}
NodeList childNodes = element.getChildNodes();
for(int i=0; i collectItems(Node collectionNode) throws Exception {
List items = new ArrayList();
NodeList childNodes = collectionNode.getChildNodes();
for(int i=0; i collectEntries(Node mapNode) throws Exception {
List entries = new ArrayList();
NodeList childNodes = mapNode.getChildNodes();
for(int i=0; i