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DorisJoin.java
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109 lines (92 loc) · 4.09 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.Join;
import sqlancer.doris.DorisProvider.DorisGlobalState;
import sqlancer.doris.DorisSchema;
import sqlancer.doris.DorisSchema.DorisColumn;
import sqlancer.doris.DorisSchema.DorisTable;
import sqlancer.doris.gen.DorisNewExpressionGenerator;
public class DorisJoin implements DorisExpression, Join<DorisExpression, DorisTable, DorisColumn> {
private final DorisTableReference leftTable;
private final DorisTableReference rightTable;
private final JoinType joinType;
private DorisExpression onCondition;
public enum JoinType {
INNER, STRAIGHT, LEFT, RIGHT;
public static JoinType getRandom() {
return Randomly.fromOptions(values());
}
}
public DorisJoin(DorisTableReference leftTable, DorisTableReference rightTable, JoinType joinType,
DorisExpression whereCondition) {
this.leftTable = leftTable;
this.rightTable = rightTable;
this.joinType = joinType;
this.onCondition = whereCondition;
}
public DorisTableReference getLeftTable() {
return leftTable;
}
public DorisTableReference getRightTable() {
return rightTable;
}
public JoinType getJoinType() {
return joinType;
}
public DorisExpression getOnCondition() {
return onCondition;
}
public static List<DorisJoin> getJoins(List<DorisTableReference> tableList, DorisGlobalState globalState) {
List<DorisJoin> joinExpressions = new ArrayList<>();
while (tableList.size() >= 2 && Randomly.getBooleanWithRatherLowProbability()) {
DorisTableReference leftTable = tableList.remove(0);
DorisTableReference 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,
joinGen.generateExpression(DorisSchema.DorisDataType.BOOLEAN)));
break;
case STRAIGHT:
joinExpressions.add(DorisJoin.createStraightJoin(leftTable, rightTable,
joinGen.generateExpression(DorisSchema.DorisDataType.BOOLEAN)));
break;
case LEFT:
joinExpressions.add(DorisJoin.createLeftOuterJoin(leftTable, rightTable,
joinGen.generateExpression(DorisSchema.DorisDataType.BOOLEAN)));
break;
case RIGHT:
joinExpressions.add(DorisJoin.createRightOuterJoin(leftTable, rightTable,
joinGen.generateExpression(DorisSchema.DorisDataType.BOOLEAN)));
break;
default:
throw new AssertionError();
}
}
return joinExpressions;
}
public static DorisJoin createInnerJoin(DorisTableReference left, DorisTableReference right,
DorisExpression predicate) {
return new DorisJoin(left, right, JoinType.INNER, predicate);
}
public static DorisJoin createStraightJoin(DorisTableReference left, DorisTableReference right,
DorisExpression predicate) {
return new DorisJoin(left, right, JoinType.STRAIGHT, predicate);
}
public static DorisJoin createRightOuterJoin(DorisTableReference left, DorisTableReference right,
DorisExpression predicate) {
return new DorisJoin(left, right, JoinType.RIGHT, predicate);
}
public static DorisJoin createLeftOuterJoin(DorisTableReference left, DorisTableReference right,
DorisExpression predicate) {
return new DorisJoin(left, right, JoinType.LEFT, predicate);
}
@Override
public void setOnClause(DorisExpression onClause) {
onCondition = onClause;
}
}