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//================================================================================
//Copyright (c) 2012, David Yu
//All rights reserved.
//--------------------------------------------------------------------------------
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// modification, are permitted provided that the following conditions are met:
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package com.dyuproject.protostuff.runtime;

import java.util.Collection;
import java.util.Map;

import com.dyuproject.protostuff.runtime.PolymorphicSchema.Handler;

/**
 * Polymorphic types.
 *
 * @author David Yu
 * @created Apr 30, 2012
 */
public enum PolymorphicSchemaFactories implements PolymorphicSchema.Factory
{
    
    ARRAY
    {
        public PolymorphicSchema newSchema(IdStrategy strategy, final Handler handler)
        {
            return new ArraySchema(strategy)
            {
                protected void setValue(Object value, Object owner)
                {
                    handler.setValue(value, owner);
                }
            };
        }
    }, 
    NUMBER
    {
        public PolymorphicSchema newSchema(IdStrategy strategy, final Handler handler)
        {
            return new NumberSchema(strategy)
            {
                protected void setValue(Object value, Object owner)
                {
                    handler.setValue(value, owner);
                }
            };
        }
    }, 
    CLASS
    {
        public PolymorphicSchema newSchema(IdStrategy strategy, final Handler handler)
        {
            return new ClassSchema(strategy)
            {
                protected void setValue(Object value, Object owner)
                {
                    handler.setValue(value, owner);
                }
            };
        }
    }, 
    ENUM
    {
        public PolymorphicSchema newSchema(IdStrategy strategy, final Handler handler)
        {
            return new PolymorphicEnumSchema(strategy)
            {
                protected void setValue(Object value, Object owner)
                {
                    handler.setValue(value, owner);
                }
            };
        }
    }, 
    COLLECTION
    {
        public PolymorphicSchema newSchema(IdStrategy strategy, final Handler handler)
        {
            return new PolymorphicCollectionSchema(strategy)
            {
                protected void setValue(Object value, Object owner)
                {
                    handler.setValue(value, owner);
                }
            };
        }
    }, 
    MAP
    {
        public PolymorphicSchema newSchema(IdStrategy strategy, final Handler handler)
        {
            return new PolymorphicMapSchema(strategy)
            {
                protected void setValue(Object value, Object owner)
                {
                    handler.setValue(value, owner);
                }
            };
        }
    },
    THROWABLE
    {
        public PolymorphicSchema newSchema(IdStrategy strategy, final Handler handler)
        {
            return new PolymorphicThrowableSchema(strategy)
            {
                protected void setValue(Object value, Object owner)
                {
                    handler.setValue(value, owner);
                }
            };
        }
    },
    OBJECT
    {
        public PolymorphicSchema newSchema(IdStrategy strategy, final Handler handler)
        {
            return new ObjectSchema(strategy)
            {
                protected void setValue(Object value, Object owner)
                {
                    handler.setValue(value, owner);
                }
            };
        }
    }
    ;
    

    public static PolymorphicSchema.Factory getFactoryFromField(Class clazz)
    {
        if(clazz.isArray())
            return ARRAY;
        
        if(Number.class == clazz)
            return NUMBER;
        
        if(Class.class == clazz)
            return CLASS;
        
        if(Enum.class == clazz)
            return ENUM;
        
        if(Map.class.isAssignableFrom(clazz))
            return MAP;
        
        if(Collection.class.isAssignableFrom(clazz))
            return COLLECTION;
        
        if(Throwable.class.isAssignableFrom(clazz))
            return THROWABLE;
        
        return OBJECT;
    }
    
    public static PolymorphicSchema.Factory getFactoryFromRepeatedValueGenericType(
            Class clazz)
    {
        if(clazz.isArray())
            return ARRAY;
        
        if(Number.class == clazz)
            return NUMBER;
        
        if(Class.class == clazz)
            return CLASS;
        
        if(Enum.class == clazz)
            return ENUM;
        
        if(Throwable.class.isAssignableFrom(clazz))
            return THROWABLE;
        
        if(Object.class == clazz)
            return OBJECT;
        
        return null;
    }
    
    public static PolymorphicSchema getSchemaFromCollectionOrMapGenericType(
            Class clazz, IdStrategy strategy)
    {
        if(clazz.isArray())
            return strategy.ARRAY_ELEMENT_SCHEMA;
        
        if(Number.class == clazz)
            return strategy.NUMBER_ELEMENT_SCHEMA;
        
        if(Class.class == clazz)
            return strategy.CLASS_ELEMENT_SCHEMA;
        
        if(Enum.class == clazz)
            return strategy.POLYMORPHIC_ENUM_ELEMENT_SCHEMA;
        
        if(Throwable.class.isAssignableFrom(clazz))
            return strategy.POLYMORPHIC_THROWABLE_ELEMENT_SCHEMA;
        
        if(Object.class == clazz)
            return strategy.OBJECT_ELEMENT_SCHEMA;
        
        return null;
    }
}