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Support of customSqlUpdate to support FROM
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...he/shardingsphere/sqlfederation/optimizer/converter/statement/update/CustomSqlUpdate.java
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| /* | ||
| * 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.shardingsphere.sqlfederation.optimizer.converter.statement.update; | ||
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| import org.apache.calcite.sql.SqlCall; | ||
| import org.apache.calcite.sql.SqlIdentifier; | ||
| import org.apache.calcite.sql.SqlKind; | ||
| import org.apache.calcite.sql.SqlNode; | ||
| import org.apache.calcite.sql.SqlNodeList; | ||
| import org.apache.calcite.sql.SqlOperator; | ||
| import org.apache.calcite.sql.SqlSelect; | ||
| import org.apache.calcite.sql.SqlSpecialOperator; | ||
| import org.apache.calcite.sql.SqlWriter; | ||
| import org.apache.calcite.sql.SqlWriter.Frame; | ||
| import org.apache.calcite.sql.parser.SqlParserPos; | ||
| import org.apache.calcite.util.ImmutableNullableList; | ||
| import org.apache.calcite.util.Pair; | ||
| import org.checkerframework.checker.nullness.qual.Nullable; | ||
| import org.checkerframework.dataflow.qual.Pure; | ||
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| import java.util.Iterator; | ||
| import java.util.List; | ||
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| public class CustomSqlUpdate extends SqlCall { | ||
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| public static final SqlSpecialOperator OPERATOR; | ||
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| private SqlNode targetTable; | ||
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| private SqlNodeList targetColumnList; | ||
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| private SqlNodeList sourceExpressionList; | ||
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| @Nullable | ||
| private SqlNode condition; | ||
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| @Nullable | ||
| private SqlSelect sourceSelect; | ||
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| @Nullable | ||
| private SqlIdentifier alias; | ||
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| @Nullable | ||
| private SqlNode from; | ||
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| public CustomSqlUpdate(final SqlParserPos pos, final SqlNode targetTable, final SqlNodeList targetColumnList, final SqlNodeList sourceExpressionList, final @Nullable SqlNode condition, | ||
| final @Nullable SqlSelect sourceSelect, final @Nullable SqlIdentifier alias, final @Nullable SqlNode from) { | ||
| super(pos); | ||
| this.targetTable = targetTable; | ||
| this.targetColumnList = targetColumnList; | ||
| this.sourceExpressionList = sourceExpressionList; | ||
| this.condition = condition; | ||
| this.sourceSelect = sourceSelect; | ||
| this.from = from; | ||
| assert sourceExpressionList.size() == targetColumnList.size(); | ||
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| this.alias = alias; | ||
| } | ||
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| public SqlKind getKind() { | ||
| return SqlKind.UPDATE; | ||
| } | ||
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| public SqlOperator getOperator() { | ||
| return OPERATOR; | ||
| } | ||
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| public List<@Nullable SqlNode> getOperandList() { | ||
| return ImmutableNullableList.of(this.targetTable, this.targetColumnList, this.sourceExpressionList, this.condition, this.alias, this.from); | ||
| } | ||
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| @Override | ||
| public void setOperand(final int i, final @Nullable SqlNode operand) { | ||
| switch (i) { | ||
| case 0: | ||
| assert operand instanceof SqlIdentifier; | ||
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| this.targetTable = operand; | ||
| break; | ||
| case 1: | ||
| this.targetColumnList = (SqlNodeList) operand; | ||
| break; | ||
| case 2: | ||
| this.sourceExpressionList = (SqlNodeList) operand; | ||
| break; | ||
| case 3: | ||
| this.condition = operand; | ||
| break; | ||
| case 4: | ||
| this.sourceExpressionList = (SqlNodeList) operand; | ||
| break; | ||
| case 5: | ||
| this.alias = (SqlIdentifier) operand; | ||
| break; | ||
| case 6: | ||
| this.from = operand; | ||
| break; | ||
| default: | ||
| throw new AssertionError(i); | ||
| } | ||
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| } | ||
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| public SqlNode getTargetTable() { | ||
| return this.targetTable; | ||
| } | ||
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| @Pure | ||
| public final @Nullable SqlNode getFrom() { | ||
| return this.from; | ||
| } | ||
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| public void setFrom(final @Nullable SqlNode from) { | ||
| this.from = from; | ||
| } | ||
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| @Pure | ||
| public @Nullable SqlIdentifier getAlias() { | ||
| return this.alias; | ||
| } | ||
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| public void setAlias(final SqlIdentifier alias) { | ||
| this.alias = alias; | ||
| } | ||
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| public SqlNodeList getTargetColumnList() { | ||
| return this.targetColumnList; | ||
| } | ||
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| public SqlNodeList getSourceExpressionList() { | ||
| return this.sourceExpressionList; | ||
| } | ||
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| public @Nullable SqlNode getCondition() { | ||
| return this.condition; | ||
| } | ||
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| public @Nullable SqlSelect getSourceSelect() { | ||
| return this.sourceSelect; | ||
| } | ||
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| public void setSourceSelect(final SqlSelect sourceSelect) { | ||
| this.sourceSelect = sourceSelect; | ||
| } | ||
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| @Override | ||
| public void unparse(final SqlWriter writer, final int leftPrec, final int rightPrec) { | ||
| final Frame frame = writer.startList(SqlWriter.FrameTypeEnum.SELECT, "UPDATE", ""); | ||
| int opLeft = this.getOperator().getLeftPrec(); | ||
| int opRight = this.getOperator().getRightPrec(); | ||
| this.targetTable.unparse(writer, opLeft, opRight); | ||
| SqlIdentifier alias = this.alias; | ||
| if (alias != null) { | ||
| writer.keyword("AS"); | ||
| alias.unparse(writer, opLeft, opRight); | ||
| } | ||
| SqlWriter.Frame setFrame = writer.startList(SqlWriter.FrameTypeEnum.UPDATE_SET_LIST, "SET", ""); | ||
| Iterator var9 = Pair.zip(this.getTargetColumnList(), this.getSourceExpressionList()).iterator(); | ||
| while (var9.hasNext()) { | ||
| Pair<SqlNode, SqlNode> pair = (Pair) var9.next(); | ||
| writer.sep(","); | ||
| SqlIdentifier id = (SqlIdentifier) pair.left; | ||
| id.unparse(writer, opLeft, opRight); | ||
| writer.keyword("="); | ||
| SqlNode sourceExp = (SqlNode) pair.right; | ||
| sourceExp.unparse(writer, opLeft, opRight); | ||
| } | ||
| writer.endList(setFrame); | ||
| SqlNode from = this.from; | ||
| if (from != null) { | ||
| writer.sep("FROM"); | ||
| from.unparse(writer, opLeft, opRight); | ||
| } | ||
| SqlNode condition = this.condition; | ||
| if (condition != null) { | ||
| writer.sep("WHERE"); | ||
| condition.unparse(writer, opLeft, opRight); | ||
| } | ||
| writer.endList(frame); | ||
| } | ||
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| static { | ||
| OPERATOR = new SqlSpecialOperator("UPDATE", SqlKind.UPDATE); | ||
| } | ||
| } |
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