com.samskivert.jdbc.depot.expression
Class EpochSeconds

java.lang.Object
  com.samskivert.jdbc.depot.expression.EpochSeconds

All Implemented Interfaces:

SQLExpression

public class EpochSeconds
extends Object
implements SQLExpression

An expression for extracting the seconds since the epoch from a date expression.

Field Summary

protected SQLExpression

_arg The argument.

Constructor Summary

EpochSeconds(SQLExpression arg)
Create a new EpochSeconds with the given argument.

Method Summary

void	accept(ExpressionVisitor builder) Most uses of this class have been implemented with a visitor pattern.
void	addClasses(Collection<Class<? extends PersistentRecord>> classSet) Adds all persistent classes that are brought into the SQL context by this clause: FROM clauses, JOINs, UPDATEs, anything that could create a new table abbreviation.
SQLExpression	getArgument()

Methods inherited from class java.lang.Object

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

Field Detail

_arg

protected SQLExpression _arg

The argument.

Constructor Detail

EpochSeconds

public EpochSeconds(SQLExpression arg)

Create a new EpochSeconds with the given argument.

Method Detail

accept

public void accept(ExpressionVisitor builder)
            throws Exception

Description copied from interface: SQLExpression

Most uses of this class have been implemented with a visitor pattern. Create your own ExpressionVisitor and call this method with it.

Specified by:

accept in interface SQLExpression

Throws:

Exception

See Also:

SQLBuilder

addClasses

public void addClasses(Collection<Class<? extends PersistentRecord>> classSet)

Description copied from interface: SQLExpression

Adds all persistent classes that are brought into the SQL context by this clause: FROM clauses, JOINs, UPDATEs, anything that could create a new table abbreviation. This method should recurse into any subordinate state that may in turn bring in new classes so that sub-queries work correctly.

Specified by:

addClasses in interface SQLExpression

getArgument

public SQLExpression getArgument()