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DorisJoin.java
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108 lines (92 loc) · 4.69 KB
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package sqlancer.doris.ast;
import java.util.ArrayList;
import java.util.List;
import sqlancer.Randomly;
import sqlancer.common.ast.newast.Node;
import sqlancer.common.ast.newast.TableReferenceNode;
import sqlancer.doris.DorisProvider.DorisGlobalState;
import sqlancer.doris.DorisSchema;
import sqlancer.doris.DorisSchema.DorisColumn;
import sqlancer.doris.DorisSchema.DorisTable;
import sqlancer.doris.gen.DorisNewExpressionGenerator;
import sqlancer.doris.visitor.DorisExprToNode;
public class DorisJoin implements Node<DorisExpression> {
private final TableReferenceNode<DorisExpression, DorisTable> leftTable;
private final TableReferenceNode<DorisExpression, DorisTable> rightTable;
private final JoinType joinType;
private final Node<DorisExpression> onCondition;
public enum JoinType {
INNER, STRAIGHT, LEFT, RIGHT;
public static JoinType getRandom() {
return Randomly.fromOptions(values());
}
}
public DorisJoin(TableReferenceNode<DorisExpression, DorisTable> leftTable,
TableReferenceNode<DorisExpression, DorisTable> rightTable, JoinType joinType,
Node<DorisExpression> whereCondition) {
this.leftTable = leftTable;
this.rightTable = rightTable;
this.joinType = joinType;
this.onCondition = whereCondition;
}
public TableReferenceNode<DorisExpression, DorisTable> getLeftTable() {
return leftTable;
}
public TableReferenceNode<DorisExpression, DorisTable> getRightTable() {
return rightTable;
}
public JoinType getJoinType() {
return joinType;
}
public Node<DorisExpression> getOnCondition() {
return onCondition;
}
public static List<Node<DorisExpression>> getJoins(List<TableReferenceNode<DorisExpression, DorisTable>> tableList,
DorisGlobalState globalState) {
List<Node<DorisExpression>> joinExpressions = new ArrayList<>();
while (tableList.size() >= 2 && Randomly.getBooleanWithRatherLowProbability()) {
TableReferenceNode<DorisExpression, DorisTable> leftTable = tableList.remove(0);
TableReferenceNode<DorisExpression, DorisTable> rightTable = tableList.remove(0);
List<DorisColumn> columns = new ArrayList<>(leftTable.getTable().getColumns());
columns.addAll(rightTable.getTable().getColumns());
DorisNewExpressionGenerator joinGen = new DorisNewExpressionGenerator(globalState).setColumns(columns);
switch (DorisJoin.JoinType.getRandom()) {
case INNER:
joinExpressions.add(DorisJoin.createInnerJoin(leftTable, rightTable,
DorisExprToNode.cast(joinGen.generateExpression(DorisSchema.DorisDataType.BOOLEAN))));
break;
case STRAIGHT:
joinExpressions.add(DorisJoin.createStraightJoin(leftTable, rightTable,
DorisExprToNode.cast(joinGen.generateExpression(DorisSchema.DorisDataType.BOOLEAN))));
break;
case LEFT:
joinExpressions.add(DorisJoin.createLeftOuterJoin(leftTable, rightTable,
DorisExprToNode.cast(joinGen.generateExpression(DorisSchema.DorisDataType.BOOLEAN))));
break;
case RIGHT:
joinExpressions.add(DorisJoin.createRightOuterJoin(leftTable, rightTable,
DorisExprToNode.cast(joinGen.generateExpression(DorisSchema.DorisDataType.BOOLEAN))));
break;
default:
throw new AssertionError();
}
}
return joinExpressions;
}
public static DorisJoin createInnerJoin(TableReferenceNode<DorisExpression, DorisTable> left,
TableReferenceNode<DorisExpression, DorisTable> right, Node<DorisExpression> predicate) {
return new DorisJoin(left, right, JoinType.INNER, predicate);
}
public static DorisJoin createStraightJoin(TableReferenceNode<DorisExpression, DorisTable> left,
TableReferenceNode<DorisExpression, DorisTable> right, Node<DorisExpression> predicate) {
return new DorisJoin(left, right, JoinType.STRAIGHT, predicate);
}
public static DorisJoin createRightOuterJoin(TableReferenceNode<DorisExpression, DorisTable> left,
TableReferenceNode<DorisExpression, DorisTable> right, Node<DorisExpression> predicate) {
return new DorisJoin(left, right, JoinType.RIGHT, predicate);
}
public static DorisJoin createLeftOuterJoin(TableReferenceNode<DorisExpression, DorisTable> left,
TableReferenceNode<DorisExpression, DorisTable> right, Node<DorisExpression> predicate) {
return new DorisJoin(left, right, JoinType.LEFT, predicate);
}
}