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Code Issues Releases Wiki Activity

improve wall && eval support

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This commit is contained in:
wenshao
2013-06-07 23:25:14 +08:00
parent cd7693fdce
commit 38f3a862e6
3 changed files with 212 additions and 200 deletions
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src/main/java/com/alibaba/druid/sql/visitor/SQLEvalVisitorUtils.java
+13 -1
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@@ -17,6 +17,7 @@ package com.alibaba.druid.sql.visitor;
import static com.alibaba.druid.sql.visitor.SQLEvalVisitor.EVAL_EXPR;
import static com.alibaba.druid.sql.visitor.SQLEvalVisitor.EVAL_VALUE;
import static com.alibaba.druid.sql.visitor.SQLEvalVisitor.EVAL_VALUE_NULL;
import java.math.BigDecimal;
import java.math.BigInteger;
@@ -580,7 +581,7 @@ public class SQLEvalVisitorUtils {
}
public static boolean visit(SQLEvalVisitor visitor, SQLNullExpr x) {
x.getAttributes().put(EVAL_VALUE, null);
x.getAttributes().put(EVAL_VALUE, EVAL_VALUE_NULL);
return false;
}
@@ -839,6 +840,14 @@ public class SQLEvalVisitorUtils {
x.putAttribute(EVAL_VALUE, value);
break;
case Is:
if (rightValue == EVAL_VALUE_NULL) {
if (leftValue != null) {
value = (leftValue == EVAL_VALUE_NULL);
x.putAttribute(EVAL_VALUE, value);
break;
}
}
break;
case Equality:
value = eq(leftValue, rightValue);
x.putAttribute(EVAL_VALUE, value);
@@ -938,6 +947,9 @@ public class SQLEvalVisitorUtils {
boolean containsValue = attributes.containsKey(EVAL_VALUE);
if (!containsValue) {
Object value = visitor.getParameters().get(varIndex);
if (value == null) {
value = EVAL_VALUE_NULL;
}
attributes.put(EVAL_VALUE, value);
}
}