package siena.core.options;
import siena.Json;
import siena.SienaException;
import siena.core.options.QueryOption.QueryOptionJson;
import siena.embed.EmbeddedMap;
import siena.embed.JsonDeserializeAs;
import siena.embed.JsonDumpable;
import siena.embed.JsonRestorable;
import siena.embed.JsonSerializer;
@JsonDeserializeAs(QueryOptionJson.class)
public abstract class QueryOption implements JsonDumpable {
/* the state of an option */
public enum State {
ACTIVE, PASSIVE
}
/* an option has a type, a state and an optional value (pagesize for PAGINATE for example) */
public int type;
protected State state = State.PASSIVE;
public QueryOption(int option, State active, Object value){
this.type = option;
this.state = active;
}
public QueryOption(int option, Object value){
this.type = option;
this.state = State.PASSIVE;
}
public QueryOption(int option){
this.type = option;
this.state = State.PASSIVE;
}
public QueryOption(QueryOption option){
this.type = option.type;
this.state = option.state;
}
public QueryOption activate() {
this.state = State.ACTIVE;
return this;
}
public QueryOption passivate() {
this.state = State.PASSIVE;
return this;
}
public boolean isActive() {
if(state == State.ACTIVE) return true;
else return false;
}
public QueryOption state(State state){
this.state = state;
return this;
}
public State state(){
return this.state;
}
public QueryOption type(int type){
this.type = type;
return this;
}
public int type(){
return this.type;
}
abstract public QueryOption clone();
public String toString() {
return "type:"+this.type+" - state:"+this.state;
}
public boolean equals(Object obj){
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
QueryOption opt = (QueryOption)obj;
return this.type == opt.type && this.state.equals(opt.state);
}
/* (non-Javadoc)
* @see siena.embed.JsonDumpable#dump()
*/
public Json dump() {
QueryOptionJson jsonOpt = new QueryOptionJson();
jsonOpt.type = this.getClass().getName();
try {
jsonOpt.value = JsonSerializer.serializeMap(this);
}catch(SienaException e) {
throw e;
} catch(Exception e) {
throw new SienaException(e);
}
return JsonSerializer.serialize(jsonOpt);
}
@EmbeddedMap
public static class QueryOptionJson implements JsonRestorable<QueryOption>{
public String type;
public Json value;
public QueryOption restore() {
try {
Class<?> clazz = Class.forName(this.type);
QueryOption opt = (QueryOption)JsonSerializer.deserializeMap(clazz, this.value);
return opt;
}catch(Exception ex) {
throw new SienaException("Unable to restore QueryOption", ex);
}
}
}
}