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Code Issues Releases Wiki Activity

improved sql parser.

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This commit is contained in:
wenshao
2017-06-06 10:13:48 +08:00
parent d9a0cae840
commit 3165a86e3c
16 changed files with 461 additions and 57 deletions
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src/main/java/com/alibaba/druid/sql/SQLUtils.java
+4 -41
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@@ -22,17 +22,10 @@ import java.util.Map;
import com.alibaba.druid.DruidRuntimeException;
import com.alibaba.druid.sql.ast.SQLExpr;
import com.alibaba.druid.sql.ast.SQLObject;
import com.alibaba.druid.sql.ast.SQLReplaceable;
import com.alibaba.druid.sql.ast.SQLStatement;
import com.alibaba.druid.sql.ast.expr.*;
import com.alibaba.druid.sql.ast.statement.SQLDeleteStatement;
import com.alibaba.druid.sql.ast.statement.SQLSelectItem;
import com.alibaba.druid.sql.ast.statement.SQLSelectOrderByItem;
import com.alibaba.druid.sql.ast.statement.SQLSelectQuery;
import com.alibaba.druid.sql.ast.statement.SQLSelectQueryBlock;
import com.alibaba.druid.sql.ast.statement.SQLSelectStatement;
import com.alibaba.druid.sql.ast.statement.SQLSetStatement;
import com.alibaba.druid.sql.ast.statement.SQLUpdateSetItem;
import com.alibaba.druid.sql.ast.statement.SQLUpdateStatement;
import com.alibaba.druid.sql.ast.statement.*;
import com.alibaba.druid.sql.dialect.db2.visitor.DB2OutputVisitor;
import com.alibaba.druid.sql.dialect.db2.visitor.DB2SchemaStatVisitor;
import com.alibaba.druid.sql.dialect.mysql.visitor.MySqlOutputVisitor;
@@ -871,38 +864,8 @@ public class SQLUtils {
SQLObject parent = expr.getParent();
if (parent instanceof SQLBinaryOpExpr) {
SQLBinaryOpExpr binaryParent = (SQLBinaryOpExpr) expr.getParent();
if (binaryParent.getLeft() == expr) {
binaryParent.setLeft(target);
return true;
} else if (binaryParent.getRight() == expr) {
binaryParent.setRight(target);
return true;
} else {
return false;
}
}
if (parent instanceof SQLSelectOrderByItem){
SQLSelectOrderByItem orderByItem = (SQLSelectOrderByItem) parent;
if (orderByItem.getExpr() == expr) {
orderByItem.setExpr(target);
return true;
}
return false;
}
if (parent instanceof SQLMethodInvokeExpr) {
SQLMethodInvokeExpr methodInvokeExpr = (SQLMethodInvokeExpr) parent;
List<SQLExpr> parameters = methodInvokeExpr.getParameters();
for (int i = 0; i < parameters.size(); ++i) {
if (parameters.get(i) == expr) {
parameters.set(i, target);
return true;
}
}
return false;
if (parent instanceof SQLReplaceable) {
return ((SQLReplaceable) parent).replace(expr, target);
}
return false;