com.mybatis.jpa.meta.ColumnMetaResolver Maven / Gradle / Ivy
package com.mybatis.jpa.meta;
import org.apache.ibatis.builder.BuilderException;
import org.apache.ibatis.type.*;
import javax.persistence.EnumType;
import javax.persistence.Enumerated;
import java.lang.reflect.Field;
/**
* @author svili
**/
public class ColumnMetaResolver {
public static JdbcType resolveJdbcType(String alias) {
if (alias == null) {
return null;
}
try {
return JdbcType.valueOf(alias);
} catch (IllegalArgumentException e) {
throw new BuilderException("Error resolving JdbcType. Cause: " + e, e);
}
}
public static String resolveJdbcAlias(Field field) {
Class fieldType = field.getType();
if (field.getType().isEnum()) {
if (field.isAnnotationPresent(Enumerated.class)) {
Enumerated enumerated = field.getAnnotation(Enumerated.class);
if (enumerated.value() == EnumType.ORDINAL) {
return "INTEGER";
}
}
return "VARCHAR";
}
if (Integer.class.equals(fieldType)) {
return "INTEGER";
}
if (Double.class.equals(fieldType)) {
return "DOUBLE";
}
if (Float.class.equals(fieldType)) {
return "FLOAT";
}
if (String.class.equals(fieldType)) {
return "VARCHAR";
}
if (java.util.Date.class.isAssignableFrom(fieldType)) {
return "TIMESTAMP";
}
return null;
}
@SuppressWarnings({"unchecked", "rawtypes"})
public static Class> resolveTypeHandler(Field field) {
if (field.getType().isEnum()) {
if (field.isAnnotationPresent(Enumerated.class)) {
Enumerated enumerated = field.getAnnotation(Enumerated.class);
if (enumerated.value() == EnumType.ORDINAL) {
EnumOrdinalTypeHandler> typeHandler = new EnumOrdinalTypeHandler(
field.getType());
return (Class>) typeHandler.getClass();
}
}
EnumTypeHandler> typeHandler = new EnumTypeHandler(field.getType());
return (Class>) typeHandler.getClass();
}
Class> typeHandlerClass = null;
if (field.getType().equals(Boolean.class)) {
typeHandlerClass = BooleanTypeHandler.class;
}
return typeHandlerClass;
}
}