/*
* Lokomo OneCMDB - An Open Source Software for Configuration
* Management of Datacenter Resources
*
* Copyright (C) 2006 Lokomo Systems AB
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or (at
* your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA.
*
* Lokomo Systems AB can be contacted via e-mail: info@lokomo.com or via
* paper mail: Lokomo Systems AB, Sv�rdv�gen 27, SE-182 33
* Danderyd, Sweden.
*
*/
package org.onecmdb.core.utils.xpath.commands;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
import org.apache.commons.jxpath.JXPathContext;
import org.apache.commons.jxpath.Pointer;
import org.onecmdb.core.ICcb;
import org.onecmdb.core.ICmdbTransaction;
import org.onecmdb.core.IOneCmdbContext;
import org.onecmdb.core.IRfcResult;
import org.onecmdb.core.ISession;
import org.onecmdb.core.ITicket;
import org.onecmdb.core.utils.xpath.IOneCMDBContentGenerator;
public class UpdateCommand extends AbstractPathCommand {
// Specific arguments to Update Command.
private String inputAttributes;
// TODO: use spring to do this.
private HashMap<String, IOneCMDBContentGenerator> generatorMap = new HashMap<String, IOneCMDBContentGenerator>();
private HashMap<String, String> attributeMap = null;
private List<String> attributeOrder = new ArrayList<String>();
private ICmdbTransaction tx;
public UpdateCommand(IOneCmdbContext context) {
super(context);
}
public String getInputAttributes() {
return inputAttributes;
}
public void setInputAttributes(String outputAttributes) {
this.inputAttributes = outputAttributes;
// Reset settings.
this.attributeMap = null;
}
private void parseInputAttributes() {
if (this.attributeMap != null) {
return;
}
this.attributeMap = new HashMap<String, String>();
String list = getInputAttributes();
if (list == null || list.equals("")) {
return;
}
// How do we handle this in the easiest way?
// The deleimiter is space but it can be inside a
// an attribute condition! Need some Tool...
String attributes[] = list.split(";");
log.debug("attributes=" + attributes.length);
for (String a : attributes) {
String split2[] = a.split("=", 2);
if (split2.length != 2) {
throw new IllegalArgumentException("Wrong fromat on inputAttributes '" + a + "' must be of format variable=value;var2=value2;..");
}
String attributeName = split2[0];
String attributeValue = split2[1];
String value = attributeMap.get(attributeName);
if (value != null) {
throw new IllegalArgumentException("Can't set multiple values to '" + attributeName + "'");
}
attributeMap.put(attributeName, attributeValue);
attributeOrder.add(attributeName);
}
}
protected String[] getInputAttributeNameAsArray() {
// Parse if not already done
parseInputAttributes();
return(attributeOrder.toArray(new String[0]));
}
protected Object getValues(String outputAttribute) {
// Parse if not already done
parseInputAttributes();
// Fetch the values strings, un parsed if expression.
String value = attributeMap.get(outputAttribute);
if (value == null) {
return(null);
}
Object parsedValue = null;
// Check if it's an expression
if (value.startsWith("[")) {
if (!value.endsWith("]")) {
throw new IllegalArgumentException("ERROR: Value expression must be ended with a ']' ");
}
String path = value.substring(1);
path = path.substring(0, path.length()-1);
JXPathContext context = getXPathContext();
Iterator<Pointer> pointers = (Iterator<Pointer>)context.iteratePointers(path);
while(pointers.hasNext()) {
Pointer pointer = pointers.next();
parsedValue = pointer.getValue();
// Migth warn here if there exists multiple.
}
} else {
// No need to parse this, will be a String representaion of the value.
parsedValue = value;
}
return(parsedValue);
}
/**
* How the content should ibe interperted.
*
* For now it's always plain text.
* @return
*/
public String getContentType() {
return("text/plain");
}
protected void setupTX() {
// Setup the tx.
ISession session = getCurrentSession();
if (session == null) {
throw new IllegalAccessError("Not logged in.");
}
ICcb ccb = (ICcb)session.getService(ICcb.class);
// The TX is stored in the session.
this.tx = ccb.getTx(session);
getDataContext().put("tx", this.tx);
}
protected void processTX() {
ISession session = getCurrentSession();
if (session == null) {
throw new IllegalAccessError("Not logged in.");
}
ICcb ccb = (ICcb)session.getService(ICcb.class);
// Commit the tx.
if (this.tx == null) {
throw new IllegalArgumentException("No tx setup!");
}
ITicket ticket = ccb.submitTx(tx);
IRfcResult result = ccb.waitForTx(ticket);
if (result.isRejected()) {
throw new IllegalAccessError("Rejected:" + result.getRejectCause());
}
}
/**
* Transfer the content to the stream.
* Execute the update.
*
* @param out
*/
public void transfer(OutputStream out) {
String[] inputAttributes = getInputAttributeNameAsArray();
setupTX();
Iterator<Pointer> iter = getPathPointers();
// Check that we have found the root object.
if (!iter.hasNext()) {
throw new IllegalArgumentException("No object matching path " + getPath() + " found!");
}
while(iter.hasNext()) {
Pointer p = (Pointer)iter.next();
JXPathContext context = getRelativeContext(p);
for (String outputAttribute : inputAttributes) {
/*
Iterator<Pointer> outputAttrPointersIter = context.iteratePointers(outputAttribute);
while(outputAttrPointersIter.hasNext()) {
Pointer vPointer = outputAttrPointersIter.next();
Object values = getValues(outputAttribute);
//NodePointer nP = (NodePointer)vPointer;
//nP.getImmediateValuePointer().setValue(values);
vPointer.setValue(values);
}
*/
Object values = getValues(outputAttribute);
if (values == null) {
String valueExpr = attributeMap.get(outputAttribute);
throw new IllegalArgumentException("No value matching expr " + valueExpr + " found!");
}
context.setValue(outputAttribute, values);
}
}
// Process the TX.
processTX();
}
}