Class QLSelectPrinter

java.lang.Object

org.apache.cayenne.ql.QLSelectPrinter

public class QLSelectPrinter
extends Object

Prints a select query as a String that QLParser can parse back, the opposite of QLSelectBuilder. Used to print the nested selects of an expression and to store the queries mapped in a DataMap.

Just like the expressions that it consists of, a printed query may not be parseable if it contains values that have no String representation in the grammar (dates, persistent objects, etc.) Also there is no access to the mapping here, so a root defined as a Java class is printed as a simple name of that class, that is the name of the entity by convention, but doesn't have to be.

Since:

5.0

Constructor Summary

Constructors

Constructor	Description
QLSelectPrinter()

Method Summary

Modifier and Type	Method	Description
static void	append(FluentSelect<?,?> query, Appendable out)
static String	print(FluentSelect<?,?> query)	Returns a query String that ObjectSelect.parse(String, Object...) can parse back into an equivalent query.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

QLSelectPrinter

public QLSelectPrinter()

Method Details

print

public static String print(FluentSelect<?,?> query)

Returns a query String that ObjectSelect.parse(String, Object...) can parse back into an equivalent query.

append

public static void append(FluentSelect<?,?> query,
 Appendable out)
                   throws IOException

Throws:

IOException