com.anysoft.formula.ExprValue Maven / Gradle / Ivy
package com.anysoft.formula;
import java.util.Date;
/**
* Value of Expression
*
* ExprValue supports five basic data types:long,string,double,boolean,date.
* @author duanyy
* @version 1.0.0
* @version 1.6.4.21 [20160103 duanyy]
* - 根据sonar建议优化代码
*
* @version 1.6.4.22 [20170324 duanyy]
* - 修正公式解析器中double值的比较问题
*/
public class ExprValue implements Comparable{
/**
* value
*/
protected Object value = null;
/**
* data type of the value
*/
protected DataType dataType = DataType.Void;
/**
* constructor
*/
public ExprValue(){
// nothing to do
}
/**
* constructor
* @param longValue long value
*/
public ExprValue(long longValue){
setLong(longValue);
}
/**
* constructor
* @param stringValue string value
*/
public ExprValue(String stringValue){
setString(stringValue);
}
/**
* constructor
* @param dateValue data value
*/
public ExprValue(Date dateValue){
setDate(dateValue);
}
public ExprValue(boolean boolValue){
setBoolean(boolValue);
}
public ExprValue(double doubleValue){
setDouble(doubleValue);
}
/**
* to get data type of the value
* @return data type of the value
*/
public DataType getDataType(){return dataType;}
public ExprValue setLong(long longValue){
value = Long.valueOf(longValue);
dataType = DataType.Long;
return this;
}
public ExprValue setDouble(double doubleValue) {
value = Double.valueOf(doubleValue);
dataType = DataType.Double;
return this;
}
public ExprValue setBoolean(boolean boolValue) {
value = Boolean.valueOf(boolValue);
dataType = DataType.Boolean;
return this;
}
public ExprValue setDate(Date dateValue) {
value = dateValue;
dataType = DataType.Date;
return this;
}
public ExprValue setString(String stringValue) {
value = stringValue;
dataType = DataType.String;
return this;
}
/**
* get long value from ExprValue
* @return long value of the expr value
* @throws FormulaException en excption when data type is mismatched
*/
public long getLong(){
switch (dataType){
case Long:return ((Long)value).longValue();
case Double:return ((Double)value).longValue();
default:
}
throw new FormulaException("Can not get a long value from " + dataType.toString());
}
public int getInt(){
return (int)getLong();
}
/**
* get double value from ExprValue
* @return double value
* @throws FormulaException en excption when data type is mismatched
*/
public double getDouble(){
switch (dataType) {
case Long:
return ((Long) value).doubleValue();
case Double:
return ((Double) value).doubleValue();
default:
}
throw new FormulaException("Can not get a double value from "
+ dataType.toString());
}
public float getFloat(){
return (float)getDouble();
}
/**
* get string value from ExprValue
* @return double value
* @throws FormulaException
*/
public String getString(){
return value.toString();
}
@Override
public String toString(){
return value.toString();
}
/**
* get boolean value from ExprValue
* @return boolean value
* @throws FormulaException en excption when data type is mismatched
*/
public boolean getBoolean(){
switch (dataType){
case Long:
return ((Long) value).longValue() != 0;
case Boolean:
return ((Boolean) value).booleanValue();
default:
}
throw new FormulaException("Can not get a boolean value from "
+ dataType.toString());
}
/**
* get date value from ExprValue
* @return date value
* @throws FormulaException en excption when data type is mismatched
*/
public Date getDate(){
if (dataType == DataType.Date){
return (Date)value;
}
throw new FormulaException("Can not get a date value from "
+ dataType.toString());
}
/**
* add
* @param other anonther ExprValue
* @return ExprValue
* @throws FormulaException en excption when data type is mismatched
*/
public ExprValue add(ExprValue other){ // NOSONAR
switch (dataType){
case Long:// NOSONAR
if (other.dataType == DataType.Long){
setLong(getLong() + other.getLong());
return this;
}else{
if (other.dataType == DataType.Double){
setDouble(getLong() + other.getDouble());
return this;
}
}
break;
case Double:
if (other.dataType == DataType.Long || other.dataType == DataType.Double){
setDouble(getDouble() + other.getDouble());
return this;
}
break;
case String:
setString(getString() + other.getString());
return this;
default:
}
throw new FormulaException("Can not add value between "
+ dataType.toString() + " and " + other.dataType.toString()); // NOSONAR
}
/**
* sub
* @param other another ExprValue
* @return ExprValue
* @throws FormulaException
*/
public ExprValue sub(ExprValue other){ // NOSONAR
switch (dataType){
case Long:// NOSONAR
if (other.dataType == DataType.Long){
setLong(getLong() - other.getLong());
return this;
}else{
if (other.dataType == DataType.Double){
setDouble(getLong() - other.getDouble());
return this;
}
}
break;
case Double:
if (other.dataType == DataType.Long || other.dataType == DataType.Double){
setDouble(getDouble() - other.getDouble());
return this;
}
break;
default:
}
throw new FormulaException("Can not sub value between "
+ dataType.toString() + " and " + other.dataType.toString());
}
/**
* mul
* @param other anther ExprValue
* @return ExprValue
* @throws FormulaException
*/
public ExprValue mul(ExprValue other){ // NOSONAR
switch (dataType){
case Long: // NOSONAR
if (other.dataType == DataType.Long){
setLong(getLong() * other.getLong());
return this;
}else{
if (other.dataType == DataType.Double){
setDouble(getLong() * other.getDouble());
return this;
}
}
break;
case Double:
if (other.dataType == DataType.Long || other.dataType == DataType.Double){
setDouble(getDouble() * other.getDouble());
return this;
}
break;
default:
}
throw new FormulaException("Can not mul value between "
+ dataType.toString() + " and " + other.dataType.toString());
}
/**
* div
* @param other anther ExprValue
* @return ExprValue
* @throws FormulaException
*/
public ExprValue div(ExprValue other){ // NOSONAR
switch (dataType){
case Long: // NOSONAR
if (other.dataType == DataType.Long){
if (other.getLong() == 0)
throw new FormulaException("divided by zero"); // NOSONAR
setLong(getLong() / other.getLong());
return this;
}else{
if (other.dataType == DataType.Double){
if (other.getDouble() == 0) // NOSONAR
throw new FormulaException("divided by zero");
setDouble(getLong() / other.getDouble());
return this;
}
}
break;
case Double: // NOSONAR
if (other.dataType == DataType.Long || other.dataType == DataType.Double){
if (other.getDouble() == 0) // NOSONAR
throw new FormulaException("divided by zero");
setDouble(getDouble() / other.getDouble());
return this;
}
break;
default:
}
throw new FormulaException("Can not div value between "
+ dataType.toString() + " and " + other.dataType.toString());
}
/**
* mod
* @param other anther ExprValue
* @return ExprValue
* @throws FormulaException
*/
public ExprValue mod(ExprValue other){
switch (dataType){ // NOSONAR
case Long:
if (other.dataType == DataType.Long){
setLong(getLong() % other.getLong());
return this;
}
default:
}
throw new FormulaException("Can not mod value between "
+ dataType.toString() + " and " + other.dataType.toString());
}
/**
* get value
* @return value of the ExprValue
*/
public Object getValue(){return value;}
/**
* Data type
* @author duanyy
* @version 1.0.0
*/
public enum DataType {Long,String,Date,Boolean,Double,Void} // NOSONAR
@Override
public int compareTo(ExprValue other) { // NOSONAR
switch (dataType){
case String:
if (other.dataType == DataType.String){
return value.toString().compareTo(other.value.toString());
}
break;
case Boolean:
if (other.dataType == DataType.Boolean){
return ((Boolean)value).compareTo((Boolean)other.value);
}
break;
case Date:
if (other.dataType == DataType.Date){
return ((Date)value).compareTo((Date)other.value);
}
break;
case Long: // NOSONAR
switch (other.dataType){
case Long:
return ((Long)value).compareTo((Long)other.value);
case Double: // NOSONAR
if (getLong() > other.getDouble()){
return 1;
}else{
return other.getDouble() > getLong() ? -1 : 0;
}
default:
}
break;
case Double: // NOSONAR
switch (other.dataType){
case Double:
return ((Double)value).compareTo((Double)other.value);
case Long: // NOSONAR
boolean compare = getDouble() > other.getLong();
if (compare){
return 1;
}else{
return getDouble() < other.getLong() ? -1 : 0;
}
default:
}
default:
break;
}
throw new FormulaException("Can not compare between "
+ dataType.toString() + " and " + other.dataType.toString());
}
}