AJ-604: fix issue about decimal matrix;

Author: chengyitian

src/com/xxdb/data/BasicDecimal128Matrix.java

@@ -5,6 +5,7 @@
 import java.io.IOException;
 import java.math.BigDecimal;
 import java.math.BigInteger;
+import java.math.RoundingMode;
 import java.util.Arrays;
 import java.util.List;
 
@@ -51,7 +52,9 @@ public BasicDecimal128Matrix(int rows, int columns, List<?> listOfArrays, int sc
                 for (int j = 0; j < newArray.length; j ++) {
                     BigDecimal bd = new BigDecimal(newArray[j]);
                     Utils.checkDecimal128Range(bd, scale);
-                    tempArr[j] = bd.scaleByPowerOfTen(scale).toBigInteger();
+                    BigDecimal multipliedValue = bd.scaleByPowerOfTen(scale).setScale(0, RoundingMode.HALF_UP);
+                    BigInteger unscaledValue = multipliedValue.toBigInteger();
+                    tempArr[j] = unscaledValue;
                 }
                 System.arraycopy(tempArr, 0, values, i * rows, rows);
             } else if (array instanceof BigInteger[]) {

src/com/xxdb/data/BasicDecimal32Matrix.java

@@ -5,6 +5,7 @@
 import java.io.IOException;
 import java.math.BigDecimal;
 import java.math.BigInteger;
+import java.math.RoundingMode;
 import java.nio.ByteBuffer;
 import java.nio.ByteOrder;
 import java.util.List;
@@ -43,11 +44,11 @@ public BasicDecimal32Matrix(int rows, int columns, List<?> listOfArrays, int sca
                 if (newArray.length == 0 || newArray.length != rows)
                     throw new Exception("The length of array "+ (i+1) + " doesn't have " + rows + " elements");
 
-                BigDecimal pow = BigDecimal.TEN.pow(this.scale);
                 for (int j = 0; j < newArray.length; j ++) {
                     BigDecimal bd = new BigDecimal(newArray[j]);
-                    if (bd.multiply(pow).intValue() > MIN_VALUE && bd.multiply(pow).intValue() < MAX_VALUE)
-                        tempArr[j] = bd.multiply(pow).intValue();
+                    BigDecimal multipliedValue = bd.scaleByPowerOfTen(scale).setScale(0, RoundingMode.HALF_UP);
+                    if (multipliedValue.intValue() > MIN_VALUE && multipliedValue.intValue() < MAX_VALUE)
+                        tempArr[j] = multipliedValue.intValue();
                 }
                 System.arraycopy(tempArr, 0, values, i * rows, rows);
             } else if (array instanceof int[]) {

src/com/xxdb/data/BasicDecimal64Matrix.java

@@ -5,6 +5,7 @@
 import java.io.IOException;
 import java.math.BigDecimal;
 import java.math.BigInteger;
+import java.math.RoundingMode;
 import java.nio.ByteBuffer;
 import java.nio.ByteOrder;
 import java.util.List;
@@ -43,11 +44,11 @@ public BasicDecimal64Matrix(int rows, int columns, List<?> listOfArrays, int sca
                 if (newArray.length == 0 || newArray.length != rows)
                     throw new Exception("The length of array "+ (i+1) + " doesn't have " + rows + " elements");
 
-                BigDecimal pow = BigDecimal.TEN.pow(this.scale);
                 for (int j = 0; j < newArray.length; j ++) {
                     BigDecimal bd = new BigDecimal(newArray[j]);
-                    if (bd.multiply(pow).longValue() > MIN_VALUE && bd.multiply(pow).longValue() < MAX_VALUE)
-                        tempArr[j] = bd.multiply(pow).longValue();
+                    BigDecimal multipliedValue = bd.scaleByPowerOfTen(scale).setScale(0, RoundingMode.HALF_UP);
+                    if (multipliedValue.longValue() > MIN_VALUE && multipliedValue.longValue() < MAX_VALUE)
+                        tempArr[j] = multipliedValue.longValue();
                 }
                 System.arraycopy(tempArr, 0, values, i * rows, rows);
             } else if (array instanceof long[]) {