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Code Issues Releases Wiki Activity

improve sql parser performance

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This commit is contained in:
wenshao
2013-01-14 20:45:13 +08:00
parent cb45e49a0c
commit 7aa2038498
6 changed files with 71 additions and 21 deletions
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src/main/java/com/alibaba/druid/sql/visitor/SchemaStatVisitor.java
+24 -3
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@@ -137,9 +137,30 @@ public class SchemaStatVisitor extends SQLASTVisitorAdapter {
}
private String handleName(String ident) {
ident = ident.replaceAll("\"", "");
ident = ident.replaceAll("`", "");
ident = ident.replaceAll(" ", "");
boolean flag0 = false;
boolean flag1 = false;
boolean flag2 = false;
for (int i = 0; i < ident.length(); ++i) {
final char ch = ident.charAt(i);
if (ch == '\"') {
flag0 = true;
} else if (ch == '`') {
flag1 = true;
} else if (ch == ' ') {
flag2 = true;
}
}
if (flag0) {
ident = ident.replaceAll("\"", "");
}
if (flag1) {
ident = ident.replaceAll("`", "");
}
if (flag2) {
ident = ident.replaceAll(" ", "");
}
ident = aliasWrap(ident);