Constructor Detail

Method Detail

• visit

   abstract <T extends Any> T visit(FilterVisitor<T> visitor)

• removeValue

   final Filter removeValue(String column, SqlTarget value)

• removeValue

   final Filter removeValue(SqlTarget target, SqlTarget value)

• minus

   final Filter minus(Filter toRemove)

  Allows to get a filter built by removing given filter from the current filter (current filter is not changed by this operation).

  Note: given filter is compared via identity, e.g. if current filter is like a = 1 or (b = 2 or a = 1) and this method is called with Filter.Leaf(SqlTarget.Column("a"), Constraint.Binary(Operator.EQUAL, "1")) then it returns the same filter, i.e. a = 1 or (b = 2 or a = 1) because even though given filter is equal to internal a = 1 sub-filters, it's a different object

• replaceColumns

   final Filter replaceColumns(Map<String, String> columns)

  Allows creating a filter which is made form the current one but with replaced column names (if any).

  For example, suppose that we have a filter like a = 1 or (a = 2 and b = 3) initially and call this method with mapOf("a" to "x", "b" to "y"). Resulting filter would be x = 1 or (x = 2 and y = 3)

• keepColumns

   final Filter keepColumns(String columns)

• keepColumns

   final Filter keepColumns(Collection<String> columns)

• dropColumns

   final Filter dropColumns(String columns)

• dropColumns

   final Filter dropColumns(Collection<String> columns)

• dropColumns

   final Filter dropColumns(Function1<String, Boolean> columnNamePredicate)

• modify

   final Filter modify(Function1<Filter.Leaf, Filter> mapper)