package org.apache.ibatis.builder.xml.dynamic;
import org.apache.ibatis.builder.BuilderException;
import org.apache.ibatis.ognl.Ognl;
import org.apache.ibatis.ognl.OgnlException;
import org.apache.ibatis.parsing.GenericTokenParser;
import org.apache.ibatis.type.SimpleTypeRegistry;
public class TextSqlNode implements SqlNode {
private String text;
public TextSqlNode(String text) {
this.text = text;
}
public boolean apply(DynamicContext context) {
GenericTokenParser parser = new GenericTokenParser("${", "}", new BindingTokenParser(context));
context.appendSql(parser.parse(text));
return true;
}
private static class BindingTokenParser implements GenericTokenParser.TokenHandler {
private DynamicContext context;
public BindingTokenParser(DynamicContext context) {
this.context = context;
}
public String handleToken(String content) {
try {
Object parameter = context.getBindings().get("_parameter");
if (parameter == null) {
context.getBindings().put("value", null);
} else if (SimpleTypeRegistry.isSimpleType(parameter.getClass())) {
context.getBindings().put("value", parameter);
}
Object value = Ognl.getValue(content, context.getBindings());
return String.valueOf(value);
} catch (OgnlException e) {
throw new BuilderException("Error evaluating expression '" + content + "'. Cause: " + e, e);
}
}
}
}