import com.mysema.query.types.path.NumberPath; //导入方法依赖的package包/类

/**

* Return an expression for {@code entityPath.fieldName} (for Numerics) with

* the {@code operator} or "equal" by default.

*

* Expr: {@code entityPath.fieldName eq searchObj}

*

* @param entityPath

* @param fieldName

* @param searchObj

* @param operator

* @param fieldType

* @return

*/

@SuppressWarnings({ "rawtypes", "unchecked" })

public static BooleanExpression createNumericExpression(

PathBuilder entityPath, String fieldName, Object searchObj,

String operator, Class> fieldType) {

NumberPath numberExpression = null;

if (BigDecimal.class.isAssignableFrom(fieldType)) {

numberExpression = entityPath.getNumber(fieldName,

(Class) fieldType);

}

else if (BigInteger.class.isAssignableFrom(fieldType)) {

numberExpression = entityPath.getNumber(fieldName,

(Class) fieldType);

}

else if (Byte.class.isAssignableFrom(fieldType)) {

numberExpression = entityPath.getNumber(fieldName,

(Class) fieldType);

}

else if (Double.class.isAssignableFrom(fieldType)

|| double.class == fieldType) {

numberExpression = entityPath.getNumber(fieldName,

(Class) fieldType);

}

else if (Float.class.isAssignableFrom(fieldType)

|| float.class == fieldType) {

numberExpression = entityPath.getNumber(fieldName,

(Class) fieldType);

}

else if (Integer.class.isAssignableFrom(fieldType)

|| int.class == fieldType) {

numberExpression = entityPath.getNumber(fieldName,

(Class) fieldType);

}

else if (Long.class.isAssignableFrom(fieldType)

|| long.class == fieldType) {

numberExpression = entityPath.getNumber(fieldName,

(Class) fieldType);

}

else if (Short.class.isAssignableFrom(fieldType)

|| short.class == fieldType) {

numberExpression = entityPath.getNumber(fieldName,

(Class) fieldType);

}

if (numberExpression != null) {

Number value = NumberUtils.createNumber((String) searchObj);

if (StringUtils.equalsIgnoreCase(operator, OPERATOR_GOE)) {

return numberExpression.goe(value);

}

else if (StringUtils.equalsIgnoreCase(operator, "gt")) {

return numberExpression.gt(value);

}

else if (StringUtils.equalsIgnoreCase(operator, "like")) {

return numberExpression.like((String) searchObj);

}

else if (StringUtils.equalsIgnoreCase(operator, OPERATOR_LOE)) {

return numberExpression.loe(value);

}

else if (StringUtils.equalsIgnoreCase(operator, "lt")) {

return numberExpression.lt(value);

}

}

return entityPath.get(fieldName).eq(searchObj);

}