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/*
 * Copyright (c) 2008-2014 akquinet tech@spree GmbH
 *
 * This file is part of Hibersap.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this software 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 org.hibersap.mapping;

import org.hibersap.annotations.Convert;
import org.hibersap.annotations.Export;
import org.hibersap.annotations.Import;
import org.hibersap.annotations.Parameter;
import org.hibersap.annotations.ParameterType;
import org.hibersap.annotations.Table;
import org.hibersap.conversion.Converter;

import java.lang.reflect.Field;
import java.util.Collection;


/**
 * @author Carsten Erker
 */
class BapiField {

    private static final Class PARAM = Parameter.class;

    private static final Class IMPORT = Import.class;

    private static final Class EXPORT = Export.class;

    private static final Class TABLE = Table.class;

    private static final Class CONVERT = Convert.class;

    private final Field field;

    public BapiField( final Field field ) {
        this.field = field;
    }

    public Class getArrayType() {
        Class associatedType = field.getType();
        return ReflectionHelper.getArrayType( associatedType );
    }

    /**
     * @return The type.
     */
    public Class getAssociatedType() {
        if ( field.getType().isArray() ) {
            return getArrayType();
        }
        if ( Collection.class.isAssignableFrom( field.getType() ) ) {
            return getGenericType();
        }
        return getType();
    }

    public Class getConverter() {
        if ( field.isAnnotationPresent( CONVERT ) ) {
            Convert convert = field.getAnnotation( CONVERT );
            return convert.converter();
        }
        return null;
    }

    public Class getGenericType() {
        return ReflectionHelper.getGenericType( field );
    }

    public String getName() {
        return field.getName();
    }

    private Parameter getParameterAnnotation() {
        return field.getAnnotation( PARAM );
    }

    public String getSapName() {
        return getParameterAnnotation().value();
    }

    public Class getType() {
        return field.getType();
    }

    public boolean isExport() {
        return field.isAnnotationPresent( EXPORT );
    }

    public boolean isImport() {
        return field.isAnnotationPresent( IMPORT );
    }

    public boolean isParameter() {
        return field.isAnnotationPresent( PARAM );
    }

    public boolean isStructure() {
        boolean result = false;
        if ( isParameter() ) {
            result = getParameterAnnotation().type() == ParameterType.STRUCTURE;
        }
        return result;
    }

    /**
     * Check if the field's type equals to {@link org.hibersap.annotations.ParameterType#TABLE_STRUCTURE}.
     *
     * @return true if the field is of the type {@link org.hibersap.annotations.ParameterType#TABLE_STRUCTURE}
     */
    public boolean isTableStructure() {
        boolean result = false;
        if ( isParameter() ) {
            result = getParameterAnnotation().type() == ParameterType.TABLE_STRUCTURE;
        }
        return result;
    }

    public boolean isTable() {
        return field.isAnnotationPresent( TABLE );
    }
}
    

    







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