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Code Issues Releases Wiki Activity

refactor

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温少
2012-03-22 19:58:36 +08:00
parent 663474384d
commit e314df948d
6 changed files with 30 additions and 14 deletions
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src/main/java/com/alibaba/druid/sql/dialect/mysql/visitor/MySqlExportParameterVisitor.java
+1 -1
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@@ -3,7 +3,6 @@ package com.alibaba.druid.sql.dialect.mysql.visitor;
import java.util.ArrayList;
import java.util.List;
import com.alibaba.druid.mapping.spi.ExportParameterVisitorUtils;
import com.alibaba.druid.sql.ast.SQLOrderBy;
import com.alibaba.druid.sql.ast.expr.SQLBetweenExpr;
import com.alibaba.druid.sql.ast.expr.SQLBinaryOpExpr;
@@ -13,6 +12,7 @@ import com.alibaba.druid.sql.ast.statement.SQLSelectGroupByClause;
import com.alibaba.druid.sql.ast.statement.SQLSelectItem;
import com.alibaba.druid.sql.dialect.mysql.ast.statement.MySqlSelectQueryBlock.Limit;
import com.alibaba.druid.sql.visitor.ExportParameterVisitor;
import com.alibaba.druid.sql.visitor.ExportParameterVisitorUtils;
public class MySqlExportParameterVisitor extends MySqlASTVisitorAdapter implements ExportParameterVisitor {
src/main/java/com/alibaba/druid/sql/dialect/oracle/visitor/OracleExportParameterVisitor.java
+1 -1
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@@ -3,7 +3,6 @@ package com.alibaba.druid.sql.dialect.oracle.visitor;
import java.util.ArrayList;
import java.util.List;
import com.alibaba.druid.mapping.spi.ExportParameterVisitorUtils;
import com.alibaba.druid.sql.ast.SQLOrderBy;
import com.alibaba.druid.sql.ast.expr.SQLBetweenExpr;
import com.alibaba.druid.sql.ast.expr.SQLBinaryOpExpr;
@@ -12,6 +11,7 @@ import com.alibaba.druid.sql.ast.expr.SQLMethodInvokeExpr;
import com.alibaba.druid.sql.ast.statement.SQLSelectGroupByClause;
import com.alibaba.druid.sql.ast.statement.SQLSelectItem;
import com.alibaba.druid.sql.visitor.ExportParameterVisitor;
import com.alibaba.druid.sql.visitor.ExportParameterVisitorUtils;
public class OracleExportParameterVisitor extends OracleASTVIsitorAdapter implements ExportParameterVisitor {
src/main/java/com/alibaba/druid/sql/dialect/sqlserver/visitor/MSSQLServerExportParameterVisitor.java
+1 -1
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@@ -3,7 +3,6 @@ package com.alibaba.druid.sql.dialect.sqlserver.visitor;
import java.util.ArrayList;
import java.util.List;
import com.alibaba.druid.mapping.spi.ExportParameterVisitorUtils;
import com.alibaba.druid.sql.ast.SQLOrderBy;
import com.alibaba.druid.sql.ast.expr.SQLBetweenExpr;
import com.alibaba.druid.sql.ast.expr.SQLBinaryOpExpr;
@@ -12,6 +11,7 @@ import com.alibaba.druid.sql.ast.expr.SQLMethodInvokeExpr;
import com.alibaba.druid.sql.ast.statement.SQLSelectGroupByClause;
import com.alibaba.druid.sql.ast.statement.SQLSelectItem;
import com.alibaba.druid.sql.visitor.ExportParameterVisitor;
import com.alibaba.druid.sql.visitor.ExportParameterVisitorUtils;
public class MSSQLServerExportParameterVisitor extends SQLServerASTVisitorAdapter implements ExportParameterVisitor {
src/main/java/com/alibaba/druid/sql/visitor/ExportParameterVisitorUtils.java
+87
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@@ -0,0 +1,87 @@
package com.alibaba.druid.sql.visitor;
import java.util.List;
import com.alibaba.druid.sql.ast.SQLExpr;
import com.alibaba.druid.sql.ast.expr.SQLBetweenExpr;
import com.alibaba.druid.sql.ast.expr.SQLBinaryOpExpr;
import com.alibaba.druid.sql.ast.expr.SQLCharExpr;
import com.alibaba.druid.sql.ast.expr.SQLLiteralExpr;
import com.alibaba.druid.sql.ast.expr.SQLNumericLiteralExpr;
import com.alibaba.druid.sql.ast.expr.SQLVariantRefExpr;
import com.alibaba.druid.sql.dialect.mysql.ast.expr.MySqlBooleanExpr;
public class ExportParameterVisitorUtils {
public static boolean exportParamterAndAccept(final List<Object> parameters, List<SQLExpr> list) {
for (int i = 0, size = list.size(); i < size; ++i) {
SQLExpr param = list.get(i);
SQLExpr result = exportParameter(parameters, param);
if (result != param) {
list.set(i, result);
}
}
return false;
}
public static SQLExpr exportParameter(final List<Object> parameters, final SQLExpr param) {
if (param instanceof SQLCharExpr) {
Object value = ((SQLCharExpr) param).getText();
parameters.add(value);
return new SQLVariantRefExpr("?");
}
if (param instanceof MySqlBooleanExpr) {
Object value = ((MySqlBooleanExpr) param).getValue();
parameters.add(value);
return new SQLVariantRefExpr("?");
}
if (param instanceof SQLNumericLiteralExpr) {
Object value = ((SQLNumericLiteralExpr) param).getNumber();
parameters.add(value);
return new SQLVariantRefExpr("?");
}
return param;
}
public static void exportParameter(final List<Object> parameters, SQLBinaryOpExpr x) {
if (x.getLeft() instanceof SQLLiteralExpr && x.getRight() instanceof SQLLiteralExpr && x.getOperator().isRelational()) {
return;
}
{
SQLExpr leftResult = ExportParameterVisitorUtils.exportParameter(parameters, x.getLeft());
if (leftResult != x.getLeft()) {
x.setLeft(leftResult);
}
}
{
SQLExpr rightResult = exportParameter(parameters, x.getRight());
if (rightResult != x.getRight()) {
x.setRight(rightResult);
}
}
}
public static void exportParameter(final List<Object> parameters, SQLBetweenExpr x) {
{
SQLExpr result = exportParameter(parameters, x.getBeginExpr());
if (result != x.getBeginExpr()) {
x.setBeginExpr(result);
}
}
{
SQLExpr result = exportParameter(parameters, x.getEndExpr());
if (result != x.getBeginExpr()) {
x.setEndExpr(result);
}
}
}
}