private IQueryResult queryLoad(ICompiledQuery code, UserInformation user) {
String id = code.getString(1);
boolean shared = code.size() > 2 && code.getInteger(2) == CMql.SHARED;
try {
Properties current = new Properties();
Reader reader = driver.getFileStore().get(IType.TYPE_OBJECT)[0].getReader(id);
current.load(reader);
reader.close();
String typeName = current.getProperty(IAttribute.M_TYPE);
if (typeName == null) throw new MorseException(MorseException.OBJECT_NOT_FOUND, id);
IType type = typeProvider.get(typeName);
if (type == null) throw new MorseException(MorseException.TYPE_NOT_FOUND, typeName);
ObjectFileStore[] store = fileStore.get(typeName);
if (store == null) throw new MorseException(MorseException.TYPE_NOT_FOUND, typeName);
if (!aclManager.hasRead(user, type.getAccessAcl()))
throw new MorseException(
MorseException.ACCESS_DENIED_READ,
new String[] {"type", typeName, type.getAccessAcl()});
if (!shared) return new FileAbstractLoadResultStream(this, id, store[1]);
else {
return new SingleRowResult(
new IAttribute[] {IAttributeDefault.ATTR_OBJ_STRING, IAttributeDefault.ATTR_OBJ_STRING},
new String[] {"channel", "path"},
new String[] {getName(), store[1].getRelativePath(id)});
}
} catch (Exception e) {
log.error(e);
return new ErrorResult(1, 1, e.toString());
}
}
public IQueryResult query(Query in, UserInformation user) throws MorseException {
if (!aclManager.hasRead(user, driver.getAccessAcl()))
throw new MorseException(
MorseException.ACCESS_DENIED_READ,
new String[] {"channel", getName(), driver.getAccessAcl()});
ICompiledQuery code = in.getCode();
if (code.size() == 0) throw new MorseException(MorseException.QUERY_EMPTY);
switch (code.getInteger(0)) {
case CMql.SELECT:
return querySelect(code, user);
case CMql.SAVE:
return querySave(code, user);
case CMql.LOAD:
return queryLoad(code, user);
case CMql.FETCH:
return queryFetch(code, user);
default:
throw new MorseException(MorseException.QUERY_UNSUPPORTED);
}
}
private IQueryResult querySelect(ICompiledQuery code, UserInformation user)
throws MorseException {
LinkedList<Attr> attr = new LinkedList<Attr>();
int off = 1;
while (code.getInteger(off) != CMql.FROM) {
Attr a = new Attr();
a.attrName = code.getString(off);
a.attrAlias = a.attrName;
off++;
if (code.getInteger(off) == CMql.AS) {
off++;
a.attrAlias = code.getString(off);
off++;
}
if (code.getInteger(off) == CMql.COMMA) off++;
attr.add(a);
}
if (attr.size() == 0) throw new MorseException(MorseException.NO_ATTRIBUTES);
off++; // FROM
String table = code.getString(off);
off++;
IType type = typeProvider.get(table);
if (type == null) throw new MorseException(MorseException.TYPE_NOT_FOUND, table);
if (!aclManager.hasRead(user, type.getAccessAcl()))
throw new MorseException(
MorseException.ACCESS_DENIED_READ,
new String[] {"type", type.getName(), type.getAccessAcl()});
if (attr.size() == 1 && ((Attr) attr.get(0)).attrName.endsWith("*")) {
attr.clear();
for (Iterator<IAttribute> i = type.getAttributes(); i.hasNext(); ) {
Attr a = new Attr();
a.attr = i.next();
a.attrName = a.attrAlias = a.attr.getName();
if (aclManager.hasRead(user, a.attr.getAccessAcl())) attr.add(a);
}
}
// append type to attr
for (Iterator i = attr.iterator(); i.hasNext(); ) {
Attr a = (Attr) i.next();
IAttribute ta = type.getAttribute(a.attrName);
if (ta == null) throw new MorseException(MorseException.UNKNOWN_ATTRIBUTE, a.attrName);
a.attr = ta;
}
String whereAttr = null;
String whereVal = null;
if (code.size() > off) {
whereAttr = code.getString(off + 1).toLowerCase();
whereVal = code.getString(off + 3);
if (whereVal.startsWith("'") && whereVal.endsWith("'"))
whereVal = whereVal.substring(1, whereVal.length() - 1);
}
ObjectFileStore[] store = fileStore.get(table);
if (store == null) throw new MorseException(MorseException.TABLE_NOT_FOUND, table);
// if ( attr.size() == 1 && attr.get( 0 ).equals( "*" ) )
// attr.clear();
return new FileAbstractSelectResult(
driver, type, store[0], whereAttr, whereVal, (Attr[]) attr.toArray(new Attr[attr.size()]));
}