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new e9799fab09 [refactor](datev2) refine function expr for datev2 (#14697)
e9799fab09 is described below
commit e9799fab09cae98b64561e74a36bb8b706790d0d
Author: Gabriel <gabrielleeb...@gmail.com>
AuthorDate: Fri Dec 2 10:13:11 2022 +0800
[refactor](datev2) refine function expr for datev2 (#14697)
* [refactor](datev2) refine function expr for datev2
* update
---
.../apache/doris/analysis/FunctionCallExpr.java | 117 +++++++++------------
.../java/org/apache/doris/catalog/Function.java | 4 -
2 files changed, 47 insertions(+), 74 deletions(-)
diff --git
a/fe/fe-core/src/main/java/org/apache/doris/analysis/FunctionCallExpr.java
b/fe/fe-core/src/main/java/org/apache/doris/analysis/FunctionCallExpr.java
index 7a6a500666..0f3618ad4c 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/analysis/FunctionCallExpr.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/analysis/FunctionCallExpr.java
@@ -72,44 +72,56 @@ public class FunctionCallExpr extends Expr {
new ImmutableSortedSet.Builder(String.CASE_INSENSITIVE_ORDER)
.add("stddev").add("stddev_val").add("stddev_samp").add("stddev_pop")
.add("variance").add("variance_pop").add("variance_pop").add("var_samp").add("var_pop").build();
- public static final Map<String, java.util.function.Function<Type[], Type>>
DECIMAL_INFER_RULE;
- public static final java.util.function.Function<Type[], Type>
DEFAULT_DECIMAL_INFER_RULE;
+ public static final Map<String, java.util.function.BiFunction<Type[],
Type, Type>> PRECISION_INFER_RULE;
+ public static final java.util.function.BiFunction<Type[], Type, Type>
DEFAULT_PRECISION_INFER_RULE;
static {
- java.util.function.Function<Type[], Type> sumRule =
(com.google.common.base.Function<Type[], Type>) type -> {
- Preconditions.checkArgument(type != null && type.length > 0);
- if (type[0].isDecimalV3()) {
+ java.util.function.BiFunction<Type[], Type, Type> sumRule =
(childrenType, returnType) -> {
+ Preconditions.checkArgument(childrenType != null &&
childrenType.length > 0);
+ if (childrenType[0].isDecimalV3()) {
return
ScalarType.createDecimalV3Type(ScalarType.MAX_DECIMAL128_PRECISION,
- ((ScalarType) type[0]).getScalarScale());
+ ((ScalarType) childrenType[0]).getScalarScale());
} else {
- return type[0];
+ return returnType;
}
};
- DEFAULT_DECIMAL_INFER_RULE = (com.google.common.base.Function<Type[],
Type>) type -> {
- Preconditions.checkArgument(type != null && type.length > 0);
- return type[0];
+ DEFAULT_PRECISION_INFER_RULE = (childrenType, returnType) -> {
+ if (childrenType != null && childrenType.length > 0
+ && childrenType[0].isDecimalV3() &&
returnType.isDecimalV3()) {
+ return childrenType[0];
+ } else if (childrenType != null && childrenType.length > 0 &&
childrenType[0].isDatetimeV2()
+ && returnType.isDatetimeV2()) {
+ return childrenType[0];
+ } else {
+ return returnType;
+ }
};
- DECIMAL_INFER_RULE = new HashMap<>();
- DECIMAL_INFER_RULE.put("sum", sumRule);
- DECIMAL_INFER_RULE.put("multi_distinct_sum", sumRule);
- DECIMAL_INFER_RULE.put("avg", (com.google.common.base.Function<Type[],
Type>) type -> {
+ PRECISION_INFER_RULE = new HashMap<>();
+ PRECISION_INFER_RULE.put("sum", sumRule);
+ PRECISION_INFER_RULE.put("multi_distinct_sum", sumRule);
+ PRECISION_INFER_RULE.put("avg", (childrenType, returnType) -> {
// TODO: how to set scale?
- Preconditions.checkArgument(type != null && type.length > 0);
- if (type[0].isDecimalV3()) {
+ Preconditions.checkArgument(childrenType != null &&
childrenType.length > 0);
+ if (childrenType[0].isDecimalV3()) {
return
ScalarType.createDecimalV3Type(ScalarType.MAX_DECIMAL128_PRECISION,
- ((ScalarType) type[0]).getScalarScale());
+ ((ScalarType) childrenType[0]).getScalarScale());
} else {
- return type[0];
+ return returnType;
}
});
- DECIMAL_INFER_RULE.put("if", (com.google.common.base.Function<Type[],
Type>) type -> {
- Preconditions.checkArgument(type != null && type.length == 3);
- if (type[1].isDecimalV3() && type[2].isDecimalV3()) {
+ PRECISION_INFER_RULE.put("if", (childrenType, returnType) -> {
+ Preconditions.checkArgument(childrenType != null &&
childrenType.length == 3);
+ if (childrenType[1].isDecimalV3() &&
childrenType[2].isDecimalV3()) {
return ScalarType.createDecimalV3Type(
- Math.max(((ScalarType) type[1]).decimalPrecision(),
((ScalarType) type[2]).decimalPrecision()),
- Math.max(((ScalarType) type[1]).decimalScale(),
((ScalarType) type[2]).decimalScale()));
+ Math.max(((ScalarType)
childrenType[1]).decimalPrecision(),
+ ((ScalarType)
childrenType[2]).decimalPrecision()),
+ Math.max(((ScalarType) childrenType[1]).decimalScale(),
+ ((ScalarType)
childrenType[2]).decimalScale()));
+ } else if (childrenType[1].isDatetimeV2() &&
childrenType[2].isDatetimeV2()) {
+ return ((ScalarType) childrenType[1]).decimalScale() >
((ScalarType) childrenType[2]).decimalScale()
+ ? childrenType[1] : childrenType[2];
} else {
- return type[0];
+ return returnType;
}
});
}
@@ -1081,11 +1093,6 @@ public class FunctionCallExpr extends Expr {
}
fn = getBuiltinFunction(fnName.getFunction(), childTypes,
Function.CompareMode.IS_NONSTRICT_SUPERTYPE_OF);
- if (fn != null && fn.getArgs()[2].isDatetime() &&
childTypes[2].isDatetimeV2()) {
- fn.setArgType(childTypes[2], 2);
- } else if (fn != null && fn.getArgs()[2].isDatetime() &&
childTypes[2].isDateV2()) {
- fn.setArgType(ScalarType.DATETIMEV2, 2);
- }
if (fn != null && childTypes[2].isDate()) {
// cast date to datetime
uncheckedCastChild(ScalarType.DATETIME, 2);
@@ -1139,18 +1146,6 @@ public class FunctionCallExpr extends Expr {
}
fn = getBuiltinFunction(fnName.getFunction(), childTypes,
Function.CompareMode.IS_NONSTRICT_SUPERTYPE_OF);
- if (fn != null && fn.getArgs()[1].isDatetime() &&
childTypes[1].isDatetimeV2()) {
- fn.setArgType(childTypes[1], 1);
- } else if (fn != null && fn.getArgs()[1].isDatetime() &&
childTypes[1].isDateV2()) {
- fn.setArgType(ScalarType.DATETIMEV2, 1);
- }
- if (fn != null && childTypes[1].isDate()) {
- // cast date to datetime
- uncheckedCastChild(ScalarType.DATETIME, 1);
- } else if (fn != null && childTypes[1].isDateV2()) {
- // cast date to datetime
- uncheckedCastChild(ScalarType.DATETIMEV2, 1);
- }
} else if (fnName.getFunction().equalsIgnoreCase("if")) {
Type[] childTypes = collectChildReturnTypes();
Type assignmentCompatibleType =
ScalarType.getAssignmentCompatibleType(childTypes[1], childTypes[2], true);
@@ -1229,8 +1224,6 @@ public class FunctionCallExpr extends Expr {
fn.setReturnType(new ArrayType(getChild(0).type));
}
- applyAutoTypeConversionForDatetimeV2();
-
if (fnName.getFunction().equalsIgnoreCase("from_unixtime")
|| fnName.getFunction().equalsIgnoreCase("date_format")) {
// if has only one child, it has default time format: yyyy-MM-dd
HH:mm:ss.SSSSSS
@@ -1342,6 +1335,13 @@ public class FunctionCallExpr extends Expr {
} else {
this.type = ScalarType.getDefaultDateType(Type.DATETIME);
}
+ } else if
(TIME_FUNCTIONS_WITH_PRECISION.contains(fnName.getFunction().toLowerCase())
+ && fn.getReturnType().isDatetimeV2()) {
+ if (children.size() == 1 && children.get(0) instanceof IntLiteral)
{
+ this.type = ScalarType.createDatetimeV2Type((int)
((IntLiteral) children.get(0)).getLongValue());
+ } else if (children.size() == 1) {
+ this.type = ScalarType.createDatetimeV2Type(6);
+ }
} else {
this.type = fn.getReturnType();
}
@@ -1383,39 +1383,16 @@ public class FunctionCallExpr extends Expr {
fn.setReturnType(Type.MAX_DECIMALV2_TYPE);
}
- if (this.type.isDecimalV3()) {
+ if (this.type.isDecimalV3() || (this.type.isDatetimeV2()
+ &&
!TIME_FUNCTIONS_WITH_PRECISION.contains(fnName.getFunction().toLowerCase()))) {
// TODO(gabriel): If type exceeds max precision of DECIMALV3, we
should change it to a double function
- this.type = DECIMAL_INFER_RULE.getOrDefault(fnName.getFunction(),
DEFAULT_DECIMAL_INFER_RULE)
- .apply(collectChildReturnTypes());
+ this.type =
PRECISION_INFER_RULE.getOrDefault(fnName.getFunction(),
DEFAULT_PRECISION_INFER_RULE)
+ .apply(collectChildReturnTypes(), this.type);
}
// rewrite return type if is nested type function
analyzeNestedFunction();
}
- private void applyAutoTypeConversionForDatetimeV2() {
- // Rule1: Now we treat datetimev2 with different precisions as
different types and we only register functions
- // for datetimev2(0). So we must apply an automatic type conversion
from datetimev2(0) to the real type.
- if (fn.getArgs().length == children.size() && fn.getArgs().length > 0)
{
- if (fn.getArgs()[0].isDatetimeV2() &&
children.get(0).getType().isDatetimeV2()) {
- fn.setArgType(children.get(0).getType(), 0);
- if (fn.getReturnType().isDatetimeV2()) {
- fn.setReturnType(children.get(0).getType());
- }
- }
- }
-
- // Rule2: For functions in TIME_FUNCTIONS_WITH_PRECISION, we can't
figure out which function should be use when
- // searching in FunctionSet. So we adjust the return type by hand here.
- if
(TIME_FUNCTIONS_WITH_PRECISION.contains(fnName.getFunction().toLowerCase())
- && fn != null && fn.getReturnType().isDatetimeV2()) {
- if (children.size() == 1 && children.get(0) instanceof IntLiteral)
{
- fn.setReturnType(ScalarType.createDatetimeV2Type((int)
((IntLiteral) children.get(0)).getLongValue()));
- } else if (children.size() == 1) {
- fn.setReturnType(ScalarType.createDatetimeV2Type(6));
- }
- }
- }
-
// if return type is nested type, need to be determined the sub-element
type
private void analyzeNestedFunction() {
// array
diff --git a/fe/fe-core/src/main/java/org/apache/doris/catalog/Function.java
b/fe/fe-core/src/main/java/org/apache/doris/catalog/Function.java
index ac9ebec41e..f1a608a9b8 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/catalog/Function.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/catalog/Function.java
@@ -183,10 +183,6 @@ public class Function implements Writable {
this.retType = type;
}
- public void setArgType(Type type, int i) {
- argTypes[i] = type;
- }
-
public Type[] getArgs() {
return argTypes;
}
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