[GitHub] incubator-carbondata pull request #194: [CARBONDATA-270] Double data type va...
Github user sujith71955 commented on a diff in the pull request:
https://github.com/apache/incubator-carbondata/pull/194#discussion_r83547082
--- Diff:
core/src/main/java/org/apache/carbondata/scan/filter/FilterUtil.java ---
@@ -1426,4 +1423,25 @@ private static void
getUnknownExpressionsList(Expression expression,
getUnknownExpressionsList(child, lst);
}
}
+ /**
+ * This method will compare double values it will preserve
+ * the -0.0 and 0.0 equality as per == ,also preserve NaN equality check
as per
+ * java.lang.Double.equals()
+ *
+ * @param d1 double value for equality check
+ * @param d2 double value for equality check
+ * @return boolean after comparing two double values.
+ */
+ public static int compare(Double d1, Double d2) {
+if ((d1.doubleValue() == d2.doubleValue()) || (Double.isNaN(d1) &&
Double.isNaN(d2))) {
+ return 0;
+}
+if (d1 < d2) {
--- End diff --
one condition we can save in else, its fine i will update as per your
comments. Thanks for reviewing.
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[GitHub] incubator-carbondata pull request #194: [CARBONDATA-270] Double data type va...
Github user sujith71955 commented on a diff in the pull request:
https://github.com/apache/incubator-carbondata/pull/194#discussion_r83546963
--- Diff:
core/src/main/java/org/apache/carbondata/scan/filter/FilterUtil.java ---
@@ -1426,4 +1423,25 @@ private static void
getUnknownExpressionsList(Expression expression,
getUnknownExpressionsList(child, lst);
}
}
+ /**
+ * This method will compare double values it will preserve
+ * the -0.0 and 0.0 equality as per == ,also preserve NaN equality check
as per
+ * java.lang.Double.equals()
+ *
+ * @param d1 double value for equality check
+ * @param d2 double value for equality check
+ * @return boolean after comparing two double values.
+ */
+ public static int compare(Double d1, Double d2) {
+if ((d1.doubleValue() == d2.doubleValue()) || (Double.isNaN(d1) &&
Double.isNaN(d2))) {
+ return 0;
+}
+if (d1 < d2) {
--- End diff --
since we are returning once any condition matches i think both if or if
else makes no difference in this context.
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[GitHub] incubator-carbondata pull request #194: [CARBONDATA-270] Double data type va...
Github user kumarvishal09 commented on a diff in the pull request:
https://github.com/apache/incubator-carbondata/pull/194#discussion_r83546209
--- Diff:
core/src/main/java/org/apache/carbondata/scan/filter/FilterUtil.java ---
@@ -1426,4 +1423,25 @@ private static void
getUnknownExpressionsList(Expression expression,
getUnknownExpressionsList(child, lst);
}
}
+ /**
+ * This method will compare double values it will preserve
+ * the -0.0 and 0.0 equality as per == ,also preserve NaN equality check
as per
+ * java.lang.Double.equals()
+ *
+ * @param d1 double value for equality check
+ * @param d2 double value for equality check
+ * @return boolean after comparing two double values.
+ */
+ public static int compare(Double d1, Double d2) {
--- End diff --
Move this method to DataTypeUtil as it can be used from multiple places and
change the method name to compareDouble
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[GitHub] incubator-carbondata pull request #194: [CARBONDATA-270] Double data type va...
Github user kumarvishal09 commented on a diff in the pull request:
https://github.com/apache/incubator-carbondata/pull/194#discussion_r83546183
--- Diff:
core/src/main/java/org/apache/carbondata/scan/filter/FilterUtil.java ---
@@ -1426,4 +1423,25 @@ private static void
getUnknownExpressionsList(Expression expression,
getUnknownExpressionsList(child, lst);
}
}
+ /**
+ * This method will compare double values it will preserve
+ * the -0.0 and 0.0 equality as per == ,also preserve NaN equality check
as per
+ * java.lang.Double.equals()
+ *
+ * @param d1 double value for equality check
+ * @param d2 double value for equality check
+ * @return boolean after comparing two double values.
+ */
+ public static int compare(Double d1, Double d2) {
+if ((d1.doubleValue() == d2.doubleValue()) || (Double.isNaN(d1) &&
Double.isNaN(d2))) {
+ return 0;
+}
+if (d1 < d2) {
--- End diff --
can't we add else if and else why three if condition is required??
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[GitHub] incubator-carbondata pull request #194: [CARBONDATA-270] Double data type va...
Github user sujith71955 commented on a diff in the pull request:
https://github.com/apache/incubator-carbondata/pull/194#discussion_r80221578
--- Diff:
core/src/main/java/org/apache/carbondata/scan/filter/FilterUtil.java ---
@@ -1401,8 +1401,7 @@ public static void logError(Throwable e, boolean
invalidRowsPresent) {
public static boolean nanSafeEqualsDoubles(Double d1, Double d2) {
Boolean xIsNan = Double.isNaN(d1);
Boolean yIsNan = Double.isNaN(d2);
-if ((xIsNan && yIsNan) || (d1.doubleValue() == d2.doubleValue())) {
-
+if ((d1.doubleValue() == d2.doubleValue()) || (xIsNan && yIsNan)) {
--- End diff --
yes ramana, right, i will fix it
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[GitHub] incubator-carbondata pull request #194: [CARBONDATA-270] Double data type va...
Github user gvramana commented on a diff in the pull request:
https://github.com/apache/incubator-carbondata/pull/194#discussion_r80221140
--- Diff:
core/src/main/java/org/apache/carbondata/scan/filter/FilterUtil.java ---
@@ -1401,8 +1401,7 @@ public static void logError(Throwable e, boolean
invalidRowsPresent) {
public static boolean nanSafeEqualsDoubles(Double d1, Double d2) {
Boolean xIsNan = Double.isNaN(d1);
Boolean yIsNan = Double.isNaN(d2);
-if ((xIsNan && yIsNan) || (d1.doubleValue() == d2.doubleValue())) {
-
+if ((d1.doubleValue() == d2.doubleValue()) || (xIsNan && yIsNan)) {
--- End diff --
Boolean xIsNan = Double.isNaN(d1); these variables are already computed,
no use of moving them. Instead use ( Double.isNaN(d1) && Double.isNaN(d2))
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[GitHub] incubator-carbondata pull request #194: [CARBONDATA-270] Double data type va...
Github user ManoharVanam commented on a diff in the pull request:
https://github.com/apache/incubator-carbondata/pull/194#discussion_r80212063
--- Diff:
core/src/main/java/org/apache/carbondata/scan/filter/FilterUtil.java ---
@@ -1401,8 +1401,7 @@ public static void logError(Throwable e, boolean
invalidRowsPresent) {
public static boolean nanSafeEqualsDoubles(Double d1, Double d2) {
Boolean xIsNan = Double.isNaN(d1);
Boolean yIsNan = Double.isNaN(d2);
-if ((xIsNan && yIsNan) || (d1.doubleValue() == d2.doubleValue())) {
-
+if ((d1.doubleValue() == d2.doubleValue()) || (xIsNan && yIsNan)) {
--- End diff --
I think we can use Double.compare instead of these two checks
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