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/*
 Copyright 2016 Goldman Sachs.
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

 Unless required by applicable law or agreed to in writing,
 software distributed under the License is distributed on an
 "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 KIND, either express or implied.  See the License for the
 specific language governing permissions and limitations
 under the License.
 */

package com.gs.fw.common.mithra.attribute;

import com.gs.collections.api.block.function.Function;
import com.gs.collections.api.set.primitive.ShortSet;
import com.gs.fw.common.mithra.MithraObjectPortal;
import com.gs.fw.common.mithra.attribute.calculator.procedure.*;
import com.gs.fw.common.mithra.extractor.ChainedAttributeValueSelector;
import com.gs.fw.common.mithra.finder.*;


public class MappedShortAttribute extends ShortAttribute implements MappedAttribute
{
    private ShortAttribute wrappedAttribute;
    private Mapper mapper;
    private Function parentSelector;

    public MappedShortAttribute(ShortAttribute wrappedAttribute, Mapper mapper, Function parentSelector)
    {
        this.wrappedAttribute = wrappedAttribute;
        this.mapper = mapper;
        this.parentSelector = parentSelector;
        while (this.wrappedAttribute instanceof MappedShortAttribute)
        {
            MappedShortAttribute ma = (MappedShortAttribute) this.wrappedAttribute;
            this.mapper = new ChainedMapper(this.mapper, ma.getMapper());
            this.wrappedAttribute = (ShortAttribute) ma.getWrappedAttribute();
            this.parentSelector = new ChainedAttributeValueSelector(this.parentSelector, ma.getParentSelector());
        }
    }

    @Override
    public String getAttributeName()
    {
        if (super.getAttributeName() == null)
        {
            computeMappedAttributeName(this.wrappedAttribute, this.parentSelector);
        }
        return super.getAttributeName();
    }

    @Override
    public String zGetTopOwnerClassName()
    {
        return this.mapper.getResultOwnerClassName();
    }

    @Override
    public Attribute getSourceAttribute()
    {
        return this.wrappedAttribute.getSourceAttribute();
    }

    @Override
    public SourceAttributeType getSourceAttributeType()
    {
        return this.wrappedAttribute.getSourceAttributeType();
    }

    @Override
    public AsOfAttribute[] getAsOfAttributes()
    {
        return this.wrappedAttribute.getAsOfAttributes();
    }

    @Override
    public boolean isSourceAttribute()
    {
        return this.wrappedAttribute.isSourceAttribute();
    }

    public Function getParentSelector()
    {
        return parentSelector;
    }

    public MappedAttribute cloneForNewMapper(Mapper mapper, Function parentSelector)
    {
        return new MappedShortAttribute((ShortAttribute) this.getWrappedAttribute(), mapper, parentSelector);
    }

    public Attribute getWrappedAttribute()
    {
        return wrappedAttribute;
    }

    public Mapper getMapper()
    {
        return mapper;
    }

    @Override
    public Operation isNull()
    {
        return new MappedOperation(this.mapper, this.wrappedAttribute.isNull());
    }

    @Override
    public Operation isNotNull()
    {
        return new MappedOperation(this.mapper, this.wrappedAttribute.isNotNull());
    }

    public short shortValueOf(Object o)
    {
        if (parentSelector == null) return 0;
        Object result = parentSelector.valueOf(o);
        if (result == null) return 0;
        return this.wrappedAttribute.shortValueOf(result);
    }

    public void setShortValue(Object o, short newValue)
    {
        if (parentSelector == null) return;
        Object result = parentSelector.valueOf(o);
        if (result == null) return;
        wrappedAttribute.setShortValue(result, newValue);
    }

    @Override
    public Operation eq(short other)
    {
        return new MappedOperation(this.mapper, this.wrappedAttribute.eq(other));
    }

    @Override
    public Operation notEq(short other)
    {
        return new MappedOperation(this.mapper, this.wrappedAttribute.notEq(other));
    }

    public void setValueNull(Object o)
    {
        MappedAttributeUtil.setValueNull(o, this.parentSelector, this.wrappedAttribute);
    }

    public boolean isAttributeNull(Object o)
    {
        return MappedAttributeUtil.isAttributeNull(o, this.parentSelector, this.wrappedAttribute);
    }

    public Object readResolve()
    {
        return this;
    }

    @Override
    public Operation in(ShortSet set)
    {
        return new MappedOperation(this.mapper, this.wrappedAttribute.in(set));
    }

    @Override
    public Operation notIn(ShortSet set)
    {
        return new MappedOperation(this.mapper, this.wrappedAttribute.notIn(set));
    }

    @Override
    public Operation notEq(ShortAttribute other)
    {
        return new MappedOperation(this.mapper, this.wrappedAttribute.notEq(other));
    }

    @Override
    public Operation greaterThan(short target)
    {
        return new MappedOperation(this.mapper, this.wrappedAttribute.greaterThan(target));
    }

    @Override
    public Operation greaterThanEquals(short target)
    {
        return new MappedOperation(this.mapper, this.wrappedAttribute.greaterThanEquals(target));
    }

    @Override
    public Operation lessThan(short target)
    {
        return new MappedOperation(this.mapper, this.wrappedAttribute.lessThan(target));
    }

    @Override
    public Operation lessThanEquals(short target)
    {
        return new MappedOperation(this.mapper, this.wrappedAttribute.lessThanEquals(target));
    }

    // join operation:
    @Override
    public Operation eq(ShortAttribute other)
    {
        return filterEqForMappedAttribute(other);
    }

    @Override
    public Operation joinEq(ShortAttribute other)
    {
        throw new RuntimeException("not implemented");
    }

    @Override
    public Operation filterEq(ShortAttribute other)
    {
        return filterEqForMappedAttribute(other);
    }

    @Override
    public String getFullyQualifiedLeftHandExpression(SqlQuery query)
    {
        this.mapper.pushMappers(query);
        String result = this.wrappedAttribute.getFullyQualifiedLeftHandExpression(query);
        this.mapper.popMappers(query);
        return result;
    }

    @Override
    public void zAppendToString(ToStringContext toStringContext)
    {
        toStringContext.pushMapper(this.mapper);
        super.zAppendToString(toStringContext);
        toStringContext.popMapper();
    }

    @Override
    public String getColumnName()
    {
        throw new RuntimeException("method getColumName() can not be called on a mapped attribute");
    }

    public boolean equals(Object other)
    {
        if (other instanceof MappedShortAttribute)
        {
            MappedShortAttribute o = (MappedShortAttribute) other;
            return this.wrappedAttribute.equals(o.wrappedAttribute) && this.mapper.equals(o.mapper);
        }
        return false;
    }

    public int hashCode()
    {
        return this.wrappedAttribute.hashCode() ^ this.mapper.hashCode();
    }

    @Override
    public MithraObjectPortal getOwnerPortal()
    {
        return this.wrappedAttribute.getOwnerPortal();
    }

    @Override
    public MithraObjectPortal getTopLevelPortal()
    {
        return this.mapper.getResultPortal();
    }

    @Override
    public void generateMapperSql(AggregateSqlQuery query)
    {
        this.mapper.generateSql(query);
        this.wrappedAttribute.generateMapperSql(query);
        this.mapper.popMappers(query);
    }

    @Override
    protected NumericAttribute createMappedAttributeWithMapperRemainder(Mapper mapperRemainder)
    {
        return new MappedShortAttribute(this.wrappedAttribute, mapperRemainder, mapperRemainder.getParentSelectorRemainder(((DeepRelationshipAttribute) this.parentSelector)));
    }

    //TODO: ledav reimplement these to adhere to Finder interfaces

    public NumericAttribute plus(com.gs.fw.finder.attribute.NumericAttribute attribute)
    {
        return MappedAttributeUtil.plus(this, (NumericAttribute) attribute);
    }

    public NumericAttribute minus(com.gs.fw.finder.attribute.NumericAttribute attribute)
    {
        return MappedAttributeUtil.minus(this, (NumericAttribute) attribute);
    }

    public NumericAttribute times(com.gs.fw.finder.attribute.NumericAttribute attribute)
    {
        return MappedAttributeUtil.times(this, (NumericAttribute) attribute);
    }

    public NumericAttribute dividedBy(com.gs.fw.finder.attribute.NumericAttribute attribute)
    {
        return MappedAttributeUtil.dividedBy(this, (NumericAttribute) attribute);
    }

    @Override
    public void forEach(final LongProcedure proc, Object o, Object context)
    {
        MappedAttributeUtil.forEach(proc, o, context, this.parentSelector, this.wrappedAttribute);
    }

    public void forEach(final DoubleProcedure proc, Object o, Object context)
    {
        MappedAttributeUtil.forEach(proc, o, context, this.parentSelector, this.wrappedAttribute);
    }

    @Override
    public void forEach(final FloatProcedure proc, Object o, Object context)
    {
        MappedAttributeUtil.forEach(proc, o, context, this.parentSelector, this.wrappedAttribute);
    }

    public void forEach(final BigDecimalProcedure proc, Object o, Object context)
    {
        MappedAttributeUtil.forEach(proc, o, context, this.parentSelector, this.wrappedAttribute);
    }

    @Override
    public void forEach(final IntegerProcedure proc, Object o, final Object context)
    {
        MappedAttributeUtil.forEach(proc, o, context, this.parentSelector, this.wrappedAttribute);
    }

    @Override
    public void forEach(final ObjectProcedure proc, Object o, Object context)
    {
        MappedAttributeUtil.forEach(proc, o, context, this.parentSelector, this.wrappedAttribute);
    }

    @Override
    public TupleAttribute tupleWith(Attribute attr)
    {
        return MappedAttributeUtil.tupleWith(this, attr);
    }

    @Override
    public TupleAttribute tupleWith(Attribute... attrs)
    {
        return MappedAttributeUtil.tupleWith(this, attrs);
    }

    @Override
    public TupleAttribute tupleWith(TupleAttribute attr)
    {
        return MappedAttributeUtil.tupleWith(this, attr);
    }

    @Override
    public Operation zCreateMappedOperation()
    {
        Operation op = this.wrappedAttribute.zCreateMappedOperation();
        if (op == NoOperation.instance())
        {
            op = new All(this.mapper.getAnyRightAttribute());
        }
        return new MappedOperation(this.mapper, op);
    }

    @Override
    public boolean isNullable()
    {
        return this.wrappedAttribute.isNullable();
    }
}