org.simpleflatmapper.map.mapper.ConstantTargetFieldMapperFactoryImpl Maven / Gradle / Ivy

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Java library to map flat record - ResultSet, csv - to java object with minimum configuration and low footprint.
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package org.simpleflatmapper.map.mapper;


import org.simpleflatmapper.converter.ContextFactoryBuilder;
import org.simpleflatmapper.map.FieldKey;
import org.simpleflatmapper.map.FieldMapper;
import org.simpleflatmapper.map.MapperBuilderErrorHandler;
import org.simpleflatmapper.map.context.MappingContextFactoryBuilder;
import org.simpleflatmapper.map.setter.*;
import org.simpleflatmapper.reflect.Getter;
import org.simpleflatmapper.reflect.Setter;
import org.simpleflatmapper.reflect.SetterFactory;
import org.simpleflatmapper.reflect.primitive.*;
import org.simpleflatmapper.reflect.meta.ClassMeta;
import org.simpleflatmapper.reflect.meta.ObjectClassMeta;
import org.simpleflatmapper.reflect.meta.PropertyMeta;
import org.simpleflatmapper.map.fieldmapper.*;
import org.simpleflatmapper.util.ErrorDoc;
import org.simpleflatmapper.util.TypeHelper;

import java.lang.reflect.Type;

public class ConstantTargetFieldMapperFactoryImpl> implements ConstantTargetFieldMapperFactory {

    private final ContextualSetterFactory> setterFactory;
    private final Type targetType;

    private ConstantTargetFieldMapperFactoryImpl(ContextualSetterFactory> setterFactory, Type targetType) {
        this.setterFactory = setterFactory;
        this.targetType = targetType;
    }

    @SuppressWarnings("unchecked")
    @Override
    public  FieldMapper newFieldMapper(
            PropertyMapping pm,
            MappingContextFactoryBuilder contextFactoryBuilder,
            MapperBuilderErrorHandler mappingErrorHandler
            ) {

        Getter getter =
               (Getter) pm.getColumnDefinition().getCustomGetterFrom(pm.getPropertyMeta().getOwnerType());

        if (getter == null) {
            getter = pm.getPropertyMeta().getGetter();
        }

        if (getter == null) {
            mappingErrorHandler.accessorNotFound("Could not find getter for " + pm.getColumnKey() + " type "
                    + pm.getPropertyMeta().getPropertyType()
                    + " path " + pm.getPropertyMeta().getPath() + ", See " + ErrorDoc.CTFM_GETTER_NOT_FOUND.toUrl());
            return null;
        }

        ContextualSetter setter = getSetterForTarget(pm, contextFactoryBuilder);


        if (setter == null) {
            mappingErrorHandler.accessorNotFound("Could not find setter for " + pm.getColumnKey() + " type "
                    + pm.getPropertyMeta().getPropertyType()
                    + " path " + pm.getPropertyMeta().getPath() 
                    + " See " + ErrorDoc.CTFM_SETTER_NOT_FOUND.toUrl());
            return null;
        }

        Type propertyType = pm.getPropertyMeta().getPropertyType();

        return buildFieldMapper(getter, setter, propertyType);
    }

    @SuppressWarnings("unchecked")
    private  FieldMapper buildFieldMapper(Getter getter, ContextualSetter setter, Type propertyType) {
        if (TypeHelper.isPrimitive(propertyType)) {
            if (getter instanceof BooleanGetter && setter instanceof BooleanContextualSetter) {
                return new BooleanConstantTargetFieldMapper((BooleanGetter)getter, (BooleanContextualSetter) setter);
            } else if (getter instanceof ByteGetter && setter instanceof ByteContextualSetter) {
                return new ByteConstantTargetFieldMapper((ByteGetter)getter, (ByteContextualSetter) setter);
            } else if (getter instanceof CharacterGetter && setter instanceof CharacterContextualSetter) {
                return new CharacterConstantTargetFieldMapper((CharacterGetter)getter, (CharacterContextualSetter) setter);
            } else if (getter instanceof ShortGetter && setter instanceof ShortContextualSetter) {
                return new ShortConstantTargetFieldMapper((ShortGetter)getter, (ShortContextualSetter) setter);
            } else if (getter instanceof IntGetter && setter instanceof IntContextualSetter) {
                return new IntConstantTargetFieldMapper((IntGetter)getter, (IntContextualSetter) setter);
            } else if (getter instanceof LongGetter && setter instanceof LongContextualSetter) {
                return new LongConstantTargetFieldMapper((LongGetter)getter, (LongContextualSetter) setter);
            } else if (getter instanceof FloatGetter && setter instanceof FloatContextualSetter) {
                return new FloatConstantTargetFieldMapper((FloatGetter)getter, (FloatContextualSetter) setter);
            } else if (getter instanceof DoubleGetter && setter instanceof DoubleContextualSetter) {
                return new DoubleConstantTargetFieldMapper((DoubleGetter)getter, (DoubleContextualSetter) setter);
            }
        }

        return new ConstantTargetFieldMapper(getter, setter);
    }

    @SuppressWarnings("unchecked")
    private  ContextualSetter getSetterForTarget(PropertyMapping pm, ContextFactoryBuilder contextFactoryBuilder) {
        ContextualSetter setter = ContextualSetterAdapter.of((Setter) pm.getColumnDefinition().getCustomSetterTo(targetType));

        final SetterFactory> customSetterFactory =
                (SetterFactory>) pm.getColumnDefinition().getCustomSetterFactoryTo(targetType);

        if (customSetterFactory != null) {
            setter = ContextualSetterAdapter.of(customSetterFactory.getSetter(pm));
        }

        if (setter == null){
            setter = setterFactory.getSetter(pm, contextFactoryBuilder);
        }

        if (setter == null) {
            if (!pm.getPropertyMeta().isSelf()) {
                final ClassMeta propertyClassMeta = pm.getPropertyMeta().getPropertyClassMeta();
                if (propertyClassMeta instanceof ObjectClassMeta) {
                    ObjectClassMeta
 ocm = (ObjectClassMeta) propertyClassMeta;

                    if (ocm.getNumberOfProperties() == 1) {
                        PropertyMeta subProp = ocm.getFirstProperty();

                        ContextualSetter subSetter = getSetterForTarget(pm.propertyMeta(subProp), contextFactoryBuilder);

                        if (subSetter != null) {
                            return new ContextualSetterOnGetter(subSetter, (Getter) subProp.getGetter());
                        }
                    }
                }
            }
        }
        return setter;
    }

    public static > ConstantTargetFieldMapperFactory newInstance(
            SetterFactory> setterFactory, Type targetType) {
        return newInstance(new ContextualSetterFactoryAdapter>(setterFactory), targetType);
    }

    public static > ConstantTargetFieldMapperFactory newInstance(
            ContextualSetterFactory> setterFactory, Type targetType) {
        return new ConstantTargetFieldMapperFactoryImpl(setterFactory, targetType);
    }



}