source: java/main/src/main/java/com/framsticks/params/types/UniqueListParam.java @ 193

package com.framsticks.params.types;

import com.framsticks.params.Access;
import com.framsticks.params.CastFailure;
import com.framsticks.params.ParamBuilder;
import com.framsticks.params.ReassignResult;
import com.framsticks.params.UniqueListAccess;
import com.framsticks.util.lang.Casting;
import com.framsticks.util.lang.Numbers;

import java.util.Map;

import javax.annotation.concurrent.Immutable;

/**
 * @author Piotr Sniegowski
 */
@Immutable
public class UniqueListParam extends ListParam {

        final String uidName;

        public UniqueListParam(ParamBuilder builder) {
                super(builder);
                this.uidName = builder.getUid();
        }

        @Override
        public String computeAccessId() {
                return "l " + containedTypeName + " " + uidName;
        }


        @Override
        public Class<?> getStorageType() {
                return Map.class;
        }

        @Override
        public Access prepareAccess(Access access) {
                return new UniqueListAccess(access, uidName);
        }

        @Override
        public ReassignResult<? extends Map<?,?>> reassign(Object newValue, Object oldValue) throws CastFailure {
                if (newValue instanceof Map) {
                        return new ReassignResult<Map<?,?>>((Map<?,?>) newValue);
                }
                Integer size = Numbers.cast(newValue, Integer.class);
                if (size != null) {
                        //return oldValue;
                        /*
                        the integer value should be ignored, because this may cause, that object is created before
                        information about it's elements is available, which would break resolution flow
                        */
                        return new ReassignResult<Map<?,?>>(Casting.tryCast(Map.class, oldValue));
                        // return ReassignResult.create(new TreeMap<Object, Object>());
                }

                throw new CastFailure();
        }

        @Override
        public String getFramsTypeName() {
                return "l " + containedTypeName + " " + uidName;
        }


}