com.digitolio.jdbi.TranslationAwareMapper Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of jdbi-extra Show documentation
JDBI extra
There is a newer version: 0.6.8.2
package com.digitolio.jdbi;

import com.digitolio.jdbi.strategy.TranslatingStrategyAware;
import org.skife.jdbi.v2.StatementContext;
import org.skife.jdbi.v2.tweak.ResultSetMapper;

import java.beans.BeanInfo;
import java.beans.IntrospectionException;
import java.beans.Introspector;
import java.beans.PropertyDescriptor;
import java.lang.reflect.InvocationTargetException;
import java.math.BigDecimal;
import java.sql.*;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;


public class TranslationAwareMapper implements ResultSetMapper {

    private final Class type;

    private final Map properties = new HashMap();

    private final TranslatingStrategyAware translater;

    public TranslationAwareMapper(Class type, TranslatingStrategyAware translater) {
        this.type = type;
        this.translater = translater;
        try {
            BeanInfo info = Introspector.getBeanInfo(type);
            for (PropertyDescriptor descriptor : info.getPropertyDescriptors()) {
                properties.put(translater.getPropertyTranslatingStrategy().translate(descriptor.getName()), descriptor);
            }
        } catch(IntrospectionException e) {
            throw new IllegalArgumentException(e);
        }
    }

    @SuppressWarnings("unchecked")
    public T map(int row, ResultSet rs, StatementContext ctx) throws SQLException {

        T bean;
        try {
            bean = type.newInstance();
        } catch(Exception e) {
            throw new IllegalArgumentException(String.format("A bean, %s, was mapped " + "which was not instantiable", type
                .getName()), e);
        }

        ResultSetMetaData metadata = rs.getMetaData();

        for (int i = 1; i <= metadata.getColumnCount(); ++i) {
//            String name = translater.getDbTranslatingStrategy().translate(metadata.getColumnLabel(i));
            String name = metadata.getColumnLabel(i);
            PropertyDescriptor descriptor = properties.get(name);

            if (descriptor != null) {
                Class type = descriptor.getPropertyType();

                Object value;

                if (type.isAssignableFrom(Boolean.class) || type.isAssignableFrom(boolean.class)) {
                    value = rs.getBoolean(i);
                } else if (type.isAssignableFrom(Byte.class) || type.isAssignableFrom(byte.class)) {
                    value = rs.getByte(i);
                } else if (type.isAssignableFrom(Short.class) || type.isAssignableFrom(short.class)) {
                    value = rs.getShort(i);
                } else if (type.isAssignableFrom(Integer.class) || type.isAssignableFrom(int.class)) {
                    value = rs.getInt(i);
                } else if (type.isAssignableFrom(Long.class) || type.isAssignableFrom(long.class)) {
                    value = rs.getLong(i);
                } else if (type.isAssignableFrom(Float.class) || type.isAssignableFrom(float.class)) {
                    value = rs.getFloat(i);
                } else if (type.isAssignableFrom(Double.class) || type.isAssignableFrom(double.class)) {
                    value = rs.getDouble(i);
                } else if (type.isAssignableFrom(BigDecimal.class)) {
                    value = rs.getBigDecimal(i);
                } else if (type.isAssignableFrom(Timestamp.class)) {
                    value = rs.getTimestamp(i);
                } else if (type.isAssignableFrom(Time.class)) {
                    value = rs.getTime(i);
                } else if (type.isAssignableFrom(Date.class)) {
                    value = rs.getDate(i);
                } else if (type.isAssignableFrom(String.class)) {
                    value = rs.getString(i);
                } else if (type.isEnum()) {
                    value = Enum.valueOf((Class) type, rs.getString(i));
                } else {
                    value = rs.getObject(i);
                }

                if (rs.wasNull() && !type.isPrimitive()) {
                    value = null;
                }

                try {
                    descriptor.getWriteMethod().invoke(bean, value);
                } catch(IllegalAccessException e) {
                    throw new IllegalArgumentException(String.format("Unable to access setter for " + "property, %s", name), e);
                } catch(InvocationTargetException e) {
                    throw new IllegalArgumentException(String.format("Invocation target exception trying to " + "invoker setter for the %s property", name), e);
                } catch(NullPointerException e) {
                    throw new IllegalArgumentException(String.format("No appropriate method to " + "write value %s ", value
                        .toString()), e);
                }

            }
        }

        return bean;
    }
}