How to use

setDisplayString

method

in

org.apache.lens.api.metastore.XExprColumn

@Override
public XExprColumn withDisplayString(String value) {
  setDisplayString(value);
  return this;
}

@Override
public XExprColumn withDisplayString(String value) {
  setDisplayString(value);
  return this;
}

/**
 * Create XExprColumn from hive ExprColum
 */
public static XExprColumn xExprColumnFromHiveExprColumn(ExprColumn ec) {
 if (ec == null) {
  return null;
 }
 XExprColumn xe = XCF.createXExprColumn();
 xe.setName(ec.getName());
 xe.setType(ec.getType());
 xe.setDescription(ec.getDescription());
 xe.setDisplayString(ec.getDisplayString());
 xe.getExprSpec().addAll(xExprSpecFromExprColumn(ec.getExpressionSpecs()));
 xe.setTags(getXProperties(xPropertiesFromMap(ec.getTags())));
 return xe;
}

/**
 * Create XExprColumn from hive ExprColum
 */
public static XExprColumn xExprColumnFromHiveExprColumn(ExprColumn ec) {
 if (ec == null) {
  return null;
 }
 XExprColumn xe = XCF.createXExprColumn();
 xe.setName(ec.getName());
 xe.setType(ec.getType());
 xe.setDescription(ec.getDescription());
 xe.setDisplayString(ec.getDisplayString());
 xe.getExprSpec().addAll(xExprSpecFromExprColumn(ec.getExpressionSpecs()));
 xe.setTags(getXProperties(xPropertiesFromMap(ec.getTags())));
 return xe;
}

xe1.setType("STRING");
xe1.setDescription("dimension expression");
xe1.setDisplayString("Dim Expression");
XExprSpec es = new XExprSpec();
es.setExpr("substr(col1, 3)");

xe1.setType("DOUBLE");
xe1.setDescription("first expression");
xe1.setDisplayString("Expression1");
XExprSpec es = new XExprSpec();
es.setExpr("msr1/1000");
xe2.setType("float");
xe2.setDescription("multi expression");
xe2.setDisplayString("Expression2");
XExprSpec es1 = new XExprSpec();
es1.setExpr("msr1/1000");