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[Refactor](nereids)Refactor Literal to an inheritance hierarchy (apac…
…he#10771) Use inheritance hierarchy instead of combination to make the framework more clear
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53 changes: 53 additions & 0 deletions
53
fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/BooleanLiteral.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,53 @@ | ||
| // Licensed to the Apache Software Foundation (ASF) under one | ||
| // or more contributor license agreements. See the NOTICE file | ||
| // distributed with this work for additional information | ||
| // regarding copyright ownership. The ASF licenses this file | ||
| // to you under the Apache License, Version 2.0 (the | ||
| // "License"); you may not use this file except in compliance | ||
| // with the License. You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, | ||
| // software distributed under the License is distributed on an | ||
| // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | ||
| // KIND, either express or implied. See the License for the | ||
| // specific language governing permissions and limitations | ||
| // under the License. | ||
|
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| package org.apache.doris.nereids.trees.expressions; | ||
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| import org.apache.doris.nereids.trees.expressions.visitor.ExpressionVisitor; | ||
| import org.apache.doris.nereids.types.BooleanType; | ||
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| /** | ||
| * Represents Boolean literal | ||
| */ | ||
| public class BooleanLiteral extends Literal { | ||
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| public static final BooleanLiteral TRUE = new BooleanLiteral(true); | ||
| public static final BooleanLiteral FALSE = new BooleanLiteral(false); | ||
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| private final boolean value; | ||
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| public BooleanLiteral(boolean value) { | ||
| super(BooleanType.INSTANCE); | ||
| this.value = value; | ||
| } | ||
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| @Override | ||
| public Boolean getValue() { | ||
| return value; | ||
| } | ||
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| @Override | ||
| public <R, C> R accept(ExpressionVisitor<R, C> visitor, C context) { | ||
| return visitor.visitBooleanLiteral(this, context); | ||
| } | ||
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| @Override | ||
| public String toString() { | ||
| return Boolean.valueOf(value).toString().toUpperCase(); | ||
| } | ||
| } |
44 changes: 44 additions & 0 deletions
44
fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/DoubleLiteral.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,44 @@ | ||
| // Licensed to the Apache Software Foundation (ASF) under one | ||
| // or more contributor license agreements. See the NOTICE file | ||
| // distributed with this work for additional information | ||
| // regarding copyright ownership. The ASF licenses this file | ||
| // to you under the Apache License, Version 2.0 (the | ||
| // "License"); you may not use this file except in compliance | ||
| // with the License. You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, | ||
| // software distributed under the License is distributed on an | ||
| // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | ||
| // KIND, either express or implied. See the License for the | ||
| // specific language governing permissions and limitations | ||
| // under the License. | ||
|
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| package org.apache.doris.nereids.trees.expressions; | ||
|
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| import org.apache.doris.nereids.trees.expressions.visitor.ExpressionVisitor; | ||
| import org.apache.doris.nereids.types.DoubleType; | ||
|
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| /** | ||
| * Double literal | ||
| */ | ||
| public class DoubleLiteral extends Literal { | ||
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| private final double value; | ||
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| public DoubleLiteral(double value) { | ||
| super(DoubleType.INSTANCE); | ||
| this.value = value; | ||
| } | ||
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| @Override | ||
| public Double getValue() { | ||
| return value; | ||
| } | ||
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| @Override | ||
| public <R, C> R accept(ExpressionVisitor<R, C> visitor, C context) { | ||
| return visitor.visitDoubleLiteral(this, context); | ||
| } | ||
| } |
44 changes: 44 additions & 0 deletions
44
fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/IntegerLiteral.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,44 @@ | ||
| // Licensed to the Apache Software Foundation (ASF) under one | ||
| // or more contributor license agreements. See the NOTICE file | ||
| // distributed with this work for additional information | ||
| // regarding copyright ownership. The ASF licenses this file | ||
| // to you under the Apache License, Version 2.0 (the | ||
| // "License"); you may not use this file except in compliance | ||
| // with the License. You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, | ||
| // software distributed under the License is distributed on an | ||
| // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | ||
| // KIND, either express or implied. See the License for the | ||
| // specific language governing permissions and limitations | ||
| // under the License. | ||
|
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| package org.apache.doris.nereids.trees.expressions; | ||
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| import org.apache.doris.nereids.trees.expressions.visitor.ExpressionVisitor; | ||
| import org.apache.doris.nereids.types.IntegerType; | ||
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| /** | ||
| * Represents Integer literal | ||
| */ | ||
| public class IntegerLiteral extends Literal { | ||
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| private final int value; | ||
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| public IntegerLiteral(int value) { | ||
| super(IntegerType.INSTANCE); | ||
| this.value = value; | ||
| } | ||
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| @Override | ||
| public Integer getValue() { | ||
| return value; | ||
| } | ||
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| @Override | ||
| public <R, C> R accept(ExpressionVisitor<R, C> visitor, C context) { | ||
| return visitor.visitIntegerLiteral(this, context); | ||
| } | ||
| } |
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