package railo.runtime.type.ref;
import railo.runtime.PageContext;
import railo.runtime.exp.PageException;
import railo.runtime.op.Caster;
import railo.runtime.type.Collection;
import railo.runtime.type.KeyImpl;
import railo.runtime.type.Query;
import railo.runtime.type.StructImpl;
/**
* represent a reference to a variable
*/
public final class VariableReference implements Reference {
private Collection coll;
private Collection.Key key;
/**
* constructor of the class
* @param coll Collection where variable is
* @param key key to the value inside the collection
*/
public VariableReference(Collection coll, String key) {
this.coll=coll;
this.key=KeyImpl.init(key);
}
/**
* constructor of the class
* @param coll Collection where variable is
* @param key key to the value inside the collection
*/
public VariableReference(Collection coll, Collection.Key key) {
this.coll=coll;
this.key=key;
}
/**
* constructor of the class
* @param o Object will be casted to Collection
* @param key key to the value inside the collection
* @throws PageException
*/
public VariableReference(Object o, String key) throws PageException {
this(Caster.toCollection(o),key);
}
/**
* constructor of the class
* @param o Object will be casted to Collection
* @param key key to the value inside the collection
* @throws PageException
*/
public VariableReference(Object o, Collection.Key key) throws PageException {
this(Caster.toCollection(o),key);
}
@Override
public Object get(PageContext pc) throws PageException {
return get();
}
private Object get() throws PageException {
if(coll instanceof Query) {
return ((Query)coll).getColumn(key);
}
return coll.get(key);
}
@Override
public Object get(PageContext pc, Object defaultValue) {
return get(defaultValue);
}
private Object get(Object defaultValue) {
if(coll instanceof Query) {
Object rtn=((Query)coll).getColumn(key,null);
if(rtn!=null)return rtn;
return defaultValue;
}
return coll.get(key,defaultValue);
}
@Override
public Object set(PageContext pc, Object value) throws PageException {
return coll.set(key,value);
}
public void set(double value) throws PageException {
coll.set(key,Caster.toDouble(value));
}
@Override
public Object setEL(PageContext pc, Object value) {
return coll.setEL(key,value);
}
@Override
public Object touch(PageContext pc) throws PageException {
Object o;
if(coll instanceof Query) {
o= ((Query)coll).getColumn(key,null);
if(o!=null) return o;
return set(pc,new StructImpl());
}
o=coll.get(key,null);
if(o!=null) return o;
return set(pc,new StructImpl());
}
@Override
public Object touchEL(PageContext pc) {
Object o;
if(coll instanceof Query) {
o= ((Query)coll).getColumn(key,null);
if(o!=null) return o;
return setEL(pc,new StructImpl());
}
o=coll.get(key,null);
if(o!=null) return o;
return setEL(pc,new StructImpl());
}
@Override
public Object remove(PageContext pc) throws PageException {
return coll.remove(key);
}
@Override
public Object removeEL(PageContext pc) {
return coll.removeEL(key);
}
@Override
public Object getParent() {
return coll;
}
/**
* @return return the parent as Collection
*/
public Collection getCollection() {
return coll;
}
@Override
public String getKeyAsString() {
return key.getString();
}
@Override
public Collection.Key getKey() {
return key;
}
@Override
public String toString() {
try {
return Caster.toString(get());
}
catch (PageException e) {
return super.toString();
}
}
}