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Code Issues Releases Wiki Activity

修正大SQL的问题

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git-svn-id: http://code.alibabatech.com/svn/druid/trunk@899 b9813039-fb51-4c41-a8b9-e21c2acb5095
This commit is contained in:
wenshao
2011-09-23 08:18:08 +00:00
parent 5bb267d6ab
commit f4d7997089
2 changed files with 64 additions and 15 deletions
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src/main/java/com/alibaba/druid/sql/parser/SQLExprParser.java
+21 -15
View File
@@ -783,12 +783,15 @@ public class SQLExprParser extends SQLParser {
}
public final SQLExpr andRest(SQLExpr expr) throws ParserException {
if (lexer.token() == Token.AND || lexer.token() == Token.AMPAMP) {
lexer.nextToken();
SQLExpr rightExp = relational();
for (;;) {
if (lexer.token() == Token.AND || lexer.token() == Token.AMPAMP) {
lexer.nextToken();
SQLExpr rightExp = relational();
expr = new SQLBinaryOpExpr(expr, SQLBinaryOperator.BooleanAnd, rightExp);
expr = andRest(expr);
expr = new SQLBinaryOpExpr(expr, SQLBinaryOperator.BooleanAnd, rightExp);
} else {
break;
}
}
return expr;
@@ -800,18 +803,21 @@ public class SQLExprParser extends SQLParser {
}
public final SQLExpr orRest(SQLExpr expr) throws ParserException {
if (lexer.token() == Token.OR) {
lexer.nextToken();
SQLExpr rightExp = and();
expr = new SQLBinaryOpExpr(expr, SQLBinaryOperator.BooleanOr, rightExp);
expr = orRest(expr);
} else if (lexer.token() == Token.XOR) {
lexer.nextToken();
SQLExpr rightExp = and();
for (;;) {
if (lexer.token() == Token.OR) {
lexer.nextToken();
SQLExpr rightExp = and();
expr = new SQLBinaryOpExpr(expr, SQLBinaryOperator.BooleanXor, rightExp);
expr = orRest(expr);
expr = new SQLBinaryOpExpr(expr, SQLBinaryOperator.BooleanOr, rightExp);
} else if (lexer.token() == Token.XOR) {
lexer.nextToken();
SQLExpr rightExp = and();
expr = new SQLBinaryOpExpr(expr, SQLBinaryOperator.BooleanXor, rightExp);
} else {
break;
}
}
return expr;
src/test/java/com/alibaba/druid/sql/oracle/bvt/LargeOrTest.java
+43
View File
@@ -0,0 +1,43 @@
package com.alibaba.druid.sql.oracle.bvt;
import junit.framework.Assert;
import junit.framework.TestCase;
import com.alibaba.druid.sql.ast.expr.SQLBinaryOpExpr;
import com.alibaba.druid.sql.ast.expr.SQLBinaryOperator;
import com.alibaba.druid.sql.ast.statement.SQLSelectQueryBlock;
import com.alibaba.druid.sql.ast.statement.SQLSelectStatement;
import com.alibaba.druid.sql.dialect.oracle.parser.OracleStatementParser;
public class LargeOrTest extends TestCase {
public void test_largeOr() throws Exception {
StringBuffer buf = new StringBuffer();
buf.append("SELECT 1 FROM T WHERE ID = ?");
for (int i = 0; i < 10000; ++i) {
buf.append(" OR ID = ?");
}
String sql = buf.toString();
OracleStatementParser parser = new OracleStatementParser(sql);
SQLSelectStatement stmt = (SQLSelectStatement) parser.parseStatementList().get(0);
SQLSelectQueryBlock select = (SQLSelectQueryBlock) stmt.getSelect().getQuery();
SQLBinaryOpExpr where = (SQLBinaryOpExpr) select.getWhere();
SQLBinaryOpExpr last = (SQLBinaryOpExpr) where.getRight();
Assert.assertEquals(SQLBinaryOperator.Equality, last.getOperator());
}
public void test_largeAnd() throws Exception {
StringBuffer buf = new StringBuffer();
buf.append("SELECT 1 FROM T WHERE ID = ?");
for (int i = 0; i < 10000; ++i) {
buf.append(" AND ID = ?");
}
String sql = buf.toString();
OracleStatementParser parser = new OracleStatementParser(sql);
SQLSelectStatement stmt = (SQLSelectStatement) parser.parseStatementList().get(0);
SQLSelectQueryBlock select = (SQLSelectQueryBlock) stmt.getSelect().getQuery();
SQLBinaryOpExpr where = (SQLBinaryOpExpr) select.getWhere();
SQLBinaryOpExpr last = (SQLBinaryOpExpr) where.getRight();
Assert.assertEquals(SQLBinaryOperator.Equality, last.getOperator());
}
}