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@englefly
englefly committed Nov 29, 2024
1 parent c49bb90 commit 0eeb184
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Showing 10 changed files with 37 additions and 44 deletions.
4 changes: 0 additions & 4 deletions fe/fe-core/src/main/java/org/apache/doris/nereids/properties/LogicalProperties.java
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Expand Up @@ -94,10 +94,6 @@ public LogicalProperties(Supplier<List<Slot>> outputSupplier,
);
}

public LogicalProperties withOutputSupplier(Supplier<List<Slot>> outputSupplier) {
return new LogicalProperties(outputSupplier, dataTraitSupplier);
}

public List<Slot> getOutput() {
return outputSupplier.get();
}
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39 changes: 29 additions & 10 deletions fe/fe-core/src/main/java/org/apache/doris/nereids/rules/rewrite/PushDownEncodeSlot.java
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Expand Up @@ -24,7 +24,7 @@
import org.apache.doris.nereids.trees.expressions.NamedExpression;
import org.apache.doris.nereids.trees.expressions.Slot;
import org.apache.doris.nereids.trees.expressions.SlotReference;
import org.apache.doris.nereids.trees.expressions.functions.scalar.EncodeStr;
import org.apache.doris.nereids.trees.expressions.functions.scalar.EncodeString;
import org.apache.doris.nereids.trees.plans.Plan;
import org.apache.doris.nereids.trees.plans.logical.LogicalCatalogRelation;
import org.apache.doris.nereids.trees.plans.logical.LogicalProject;
Expand Down Expand Up @@ -78,13 +78,13 @@ private boolean containsEncode(LogicalProject<? extends Plan> project) {
}

private boolean containsEncode(Expression expr) {
return expr instanceof EncodeStr && expr.child(0) instanceof SlotReference;
return expr instanceof EncodeString && expr.child(0) instanceof SlotReference;
}

private List<Alias> collectEncodeAlias(LogicalProject<? extends Plan> project) {
List<Alias> encodeAlias = new ArrayList<>();
project.getProjects().forEach(e -> {
if (e instanceof Alias && e.child(0) instanceof EncodeStr) {
if (e instanceof Alias && e.child(0) instanceof EncodeString) {
encodeAlias.add((Alias) e);
}
});
Expand All @@ -94,15 +94,32 @@ private List<Alias> collectEncodeAlias(LogicalProject<? extends Plan> project) {
private LogicalProject<? extends Plan> pushDownEncodeSlot(LogicalProject<? extends Plan> project) {
List<Alias> encodeAlias = collectEncodeAlias(project);
LogicalProject<? extends Plan> result = (LogicalProject<? extends Plan>)
project.accept(EncodeSlotPushDownVisitor.visitor, encodeAlias);
project.accept(EncodeSlotPushDownVisitor.INSTANCE, encodeAlias);
return result;
}

/**
* push down encode slot
*/
public static class EncodeSlotPushDownVisitor extends PlanVisitor<Plan, List<Alias>> {
public static EncodeSlotPushDownVisitor visitor = new EncodeSlotPushDownVisitor();
public static EncodeSlotPushDownVisitor INSTANCE = new EncodeSlotPushDownVisitor();

public LogicalProject<Plan> replaceProjectsEncodeSlot(LogicalProject<Plan> project, Map<? extends Expression, ? extends Expression> replaceMap) {
List<NamedExpression> newProjections = new ArrayList<>();
boolean changed = false;
for (NamedExpression expr : project.getProjects()) {
if (replaceMap.containsKey(expr) && replaceMap.get(expr) instanceof NamedExpression) {
newProjections.add((NamedExpression) replaceMap.get(expr));
changed = true;
} else {
newProjections.add(expr);
}
}
if (changed) {
return project.withProjects(newProjections);
}
return project;
}

@Override
public Plan visit(Plan plan, List<Alias> encodeAlias) {
Expand All @@ -111,11 +128,11 @@ public Plan visit(Plan plan, List<Alias> encodeAlias) {
// slot1 -> slot2
Map<Expression, Slot> replaceMap = new HashMap<>();
List<Set<Slot>> byPassSlots = plan.children().stream()
.map(this::getByPassSlot)
.map(this::getPassThroughSlots)
.collect(Collectors.toList());
Map<Plan, List<Alias>> toBePushed = new HashMap<>();
for (Alias alias : encodeAlias) {
EncodeStr encode = (EncodeStr) alias.child();
EncodeString encode = (EncodeString) alias.child();
Expression strExpr = encode.child();
if (strExpr instanceof SlotReference) {
for (int i = 0; i < byPassSlots.size(); i++) {
Expand All @@ -134,7 +151,9 @@ public Plan visit(Plan plan, List<Alias> encodeAlias) {
// 1. rewrite project's expressions: project(slot2),
// 2. push encode_as_int(slot1) as slot2 down to project.child()
// rewrite expressions
plan = plan.replaceExpressions(replaceMap);
if (plan instanceof LogicalProject) {
plan = replaceProjectsEncodeSlot((LogicalProject)plan, replaceMap);
}
// rewrite children
ImmutableList.Builder<Plan> newChildren = ImmutableList.builderWithExpectedSize(plan.arity());
boolean hasNewChildren = false;
Expand Down Expand Up @@ -170,8 +189,8 @@ public Plan visit(Plan plan, List<Alias> encodeAlias) {
return plan;
}

private Set<Slot> getByPassSlot(Plan plan) {
Set<Slot> outputSlots = Sets.newHashSet(plan.getOutput());
private Set<Slot> getPassThroughSlots(Plan plan) {
Set<Slot> outputSlots = Sets.newHashSet(plan.getOutputSet());
outputSlots.removeAll(plan.getInputSlots());
return outputSlots;
}
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4 changes: 2 additions & 2 deletions ...re/src/main/java/org/apache/doris/nereids/rules/rewrite/PushDownFilterThroughProject.java
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Expand Up @@ -23,7 +23,7 @@
import org.apache.doris.nereids.trees.expressions.Expression;
import org.apache.doris.nereids.trees.expressions.Slot;
import org.apache.doris.nereids.trees.expressions.functions.scalar.DecodeAsVarchar;
import org.apache.doris.nereids.trees.expressions.functions.scalar.EncodeStr;
import org.apache.doris.nereids.trees.expressions.functions.scalar.EncodeString;
import org.apache.doris.nereids.trees.plans.Plan;
import org.apache.doris.nereids.trees.plans.logical.LogicalFilter;
import org.apache.doris.nereids.trees.plans.logical.LogicalLimit;
Expand Down Expand Up @@ -149,7 +149,7 @@ private static Set<Expression> eliminateDecodeAndEncode(Set<Expression> expressi
}

private static Expression eliminateDecodeAndEncode(Expression expression) {
if (expression instanceof DecodeAsVarchar && expression.child(0) instanceof EncodeStr) {
if (expression instanceof DecodeAsVarchar && expression.child(0) instanceof EncodeString) {
return expression.child(0).child(0);
}
boolean hasNewChild = false;
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2 changes: 1 addition & 1 deletion ...main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/EncodeAsBigInt.java
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Expand Up @@ -33,7 +33,7 @@
/**
* ScalarFunction 'EncodeAsBigInt'.
*/
public class EncodeAsBigInt extends EncodeStr
public class EncodeAsBigInt extends EncodeString
implements ExplicitlyCastableSignature, PropagateNullable {

public static final List<FunctionSignature> SIGNATURES = ImmutableList.of(
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2 changes: 1 addition & 1 deletion ...rc/main/java/org/apache/doris/nereids/trees/expressions/functions/scalar/EncodeAsInt.java
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Expand Up @@ -33,7 +33,7 @@
/**
* ScalarFunction 'EncodeAsInt'.
*/
public class EncodeAsInt extends EncodeStr
public class EncodeAsInt extends EncodeString
implements ExplicitlyCastableSignature, PropagateNullable {

public static final List<FunctionSignature> SIGNATURES = ImmutableList.of(
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2 changes: 1 addition & 1 deletion ...in/java/org/apache/doris/nereids/trees/expressions/functions/scalar/EncodeAsLargeInt.java
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Expand Up @@ -33,7 +33,7 @@
/**
* ScalarFunction 'EncodeAsLargeInt'.
*/
public class EncodeAsLargeInt extends EncodeStr
public class EncodeAsLargeInt extends EncodeString
implements ExplicitlyCastableSignature, PropagateNullable {

public static final List<FunctionSignature> SIGNATURES = ImmutableList.of(
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2 changes: 1 addition & 1 deletion ...in/java/org/apache/doris/nereids/trees/expressions/functions/scalar/EncodeAsSmallInt.java
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Expand Up @@ -33,7 +33,7 @@
/**
* ScalarFunction 'CompressAsSmallInt'.
*/
public class EncodeAsSmallInt extends EncodeStr
public class EncodeAsSmallInt extends EncodeString
implements ExplicitlyCastableSignature, PropagateNullable {

public static final List<FunctionSignature> SIGNATURES = ImmutableList.of(
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4 changes: 2 additions & 2 deletions ...pressions/functions/scalar/EncodeStr.java → ...ssions/functions/scalar/EncodeString.java
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Expand Up @@ -23,11 +23,11 @@
/**
* Encode_as_XXXInt
*/
public abstract class EncodeStr extends ScalarFunction implements UnaryExpression {
public abstract class EncodeString extends ScalarFunction implements UnaryExpression {
/**
* constructor with 1 argument.
*/
public EncodeStr(String name, Expression arg0) {
public EncodeString(String name, Expression arg0) {
super(name, arg0);
}
}
4 changes: 0 additions & 4 deletions fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/Plan.java
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Expand Up @@ -233,8 +233,4 @@ default String getGroupIdAsString() {
default String getGroupIdWithPrefix() {
return "@" + getGroupIdAsString();
}

default Plan replaceExpressions(Map<? extends Expression, ? extends Expression> replaceMap) {
return this;
}
}
18 changes: 0 additions & 18 deletions fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/logical/LogicalProject.java
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Expand Up @@ -278,22 +278,4 @@ public void computeFd(DataTrait.Builder builder) {
}
}
}

@Override
public Plan replaceExpressions(Map<? extends Expression, ? extends Expression> replaceMap) {
List<NamedExpression> newProjections = new ArrayList<>();
boolean changed = false;
for (NamedExpression expr : getProjects()) {
if (replaceMap.containsKey(expr) && replaceMap.get(expr) instanceof NamedExpression) {
newProjections.add((NamedExpression) replaceMap.get(expr));
changed = true;
} else {
newProjections.add(expr);
}
}
if (changed) {
return this.withProjects(newProjections);
}
return this;
}
}

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