com.litongjava.db.activerecord.sql.NameSpaceDirective Maven / Gradle / Ivy
package com.litongjava.db.activerecord.sql;
import com.jfinal.template.Directive;
import com.jfinal.template.Env;
import com.jfinal.template.TemplateException;
import com.jfinal.template.expr.ast.Const;
import com.jfinal.template.expr.ast.Expr;
import com.jfinal.template.expr.ast.ExprList;
import com.jfinal.template.io.Writer;
import com.jfinal.template.stat.ParseException;
import com.jfinal.template.stat.Scope;
/**
* NameSpaceDirective
*/
public class NameSpaceDirective extends Directive {
static final String NAME_SPACE_KEY = "_NAME_SPACE_";
private String nameSpace;
public void setExprList(ExprList exprList) {
if (exprList.length() == 0) {
throw new ParseException("The parameter of #namespace directive can not be blank", location);
}
if (exprList.length() > 1) {
throw new ParseException("Only one parameter allowed for #namespace directive", location);
}
Expr expr = exprList.getExpr(0);
if (expr instanceof Const && ((Const)expr).isStr()) {
} else {
throw new ParseException("The parameter of #namespace directive must be String", location);
}
this.nameSpace = ((Const)expr).getStr();
}
public void exec(Env env, Scope scope, Writer writer) {
if (scope.get(NAME_SPACE_KEY) != null) {
throw new TemplateException("#namespace directive can not be nested", location);
}
scope.set(NAME_SPACE_KEY, nameSpace);
try {
stat.exec(env, scope, writer);
} finally {
scope.remove(NAME_SPACE_KEY);
}
}
public boolean hasEnd() {
return true;
}
}