com.healthmarketscience.sqlbuilder
Class NotCondition

java.lang.Object
  com.healthmarketscience.common.util.AppendeeObject
      com.healthmarketscience.sqlbuilder.SqlObject
          com.healthmarketscience.sqlbuilder.Condition
              com.healthmarketscience.sqlbuilder.NotCondition

All Implemented Interfaces:

Appendee

public class NotCondition
extends Condition

Outputs the negation of the given condition "(NOT <condition>)"

Author:

James Ahlborn

Field Summary

Fields inherited from class com.healthmarketscience.sqlbuilder.Condition

EMPTY

Fields inherited from class com.healthmarketscience.sqlbuilder.SqlObject

ALL_SYMBOL, NULL_VALUE, QUESTION_MARK

Constructor Summary

NotCondition(Condition condition)

NotCondition(Object condition)
Object -> Condition conversions handled by Converter.toConditionObject(Object).

Method Summary

protected void	appendCustomIfNotNull(AppendableExt app, SqlObject obj) Appends the given custom clause to the given AppendableExt, handling null and enclosing parens.
protected void	appendNestedClauses(AppendableExt app, SqlObjectList<? extends com.healthmarketscience.sqlbuilder.NestableClause> nestedClauses) Appends the given nested clauses to the given AppendableExt, handling empty nested clauses and enclosing parens.
void	appendTo(AppendableExt app)
protected static boolean	areEmpty(SqlObjectList<? extends com.healthmarketscience.sqlbuilder.NestableClause> nestedClauses) Determines if any of the given clauses are non-empty.
protected void	closeParen(AppendableExt app) Appends a close parenthesis to the given AppendableExt if disableParens is true, otherwise does nothing.
protected void	collectSchemaObjects(ValidationContext vContext) Used during Query.validate() calls to collect the dbschema objects referenced in a query.
boolean	hasParens() Returns true iff the output of this instance would include surrounding parentheses, false otherwise.
protected static boolean	hasParens(SqlObjectList<? extends com.healthmarketscience.sqlbuilder.NestableClause> nestedClauses) Determines if any of the given clauses are non-empty.
boolean	isDisableParens() Returns whether or not wrapping parentheses are disabled for this clause (for clauses which utilize wrapping parentheses).
boolean	isEmpty() Returns true iff the output of this instance would be an empty expression, false otherwise.
protected void	openParen(AppendableExt app) Appends an open parenthesis to the given AppendableExt if disableParens is true, otherwise does nothing.

Methods inherited from class com.healthmarketscience.sqlbuilder.Condition

setDisableParens

Methods inherited from class com.healthmarketscience.sqlbuilder.SqlObject

doValidate, toString

Methods inherited from class com.healthmarketscience.common.util.AppendeeObject

toString, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

NotCondition

public NotCondition(Object condition)

Object -> Condition conversions handled by Converter.toConditionObject(Object).

NotCondition

public NotCondition(Condition condition)

Method Detail

isEmpty

public boolean isEmpty()

Returns true iff the output of this instance would be an empty expression, false otherwise.

Default implementation returns false.

collectSchemaObjects

protected void collectSchemaObjects(ValidationContext vContext)

Description copied from class: SqlObject

Used during Query.validate() calls to collect the dbschema objects referenced in a query. Any subclass of this class should add all referenced tables and columns to the appropriate collections.

Specified by:

collectSchemaObjects in class SqlObject

Parameters:

vContext - handle to the current validation context

appendTo

public void appendTo(AppendableExt app)
              throws IOException

Specified by:

appendTo in interface Appendee

Overrides:

appendTo in class AppendeeObject

Throws:

IOException

isDisableParens

public boolean isDisableParens()

Returns whether or not wrapping parentheses are disabled for this clause (for clauses which utilize wrapping parentheses). Defaults to false.

hasParens

public boolean hasParens()

Returns true iff the output of this instance would include surrounding parentheses, false otherwise.

Default implementation returns !isEmpty() && !isDisableParens().

areEmpty

protected static boolean areEmpty(SqlObjectList<? extends com.healthmarketscience.sqlbuilder.NestableClause> nestedClauses)

Determines if any of the given clauses are non-empty.

Returns:

false if at least one clause is non-empty, true otherwise

hasParens

protected static boolean hasParens(SqlObjectList<? extends com.healthmarketscience.sqlbuilder.NestableClause> nestedClauses)

Determines if any of the given clauses are non-empty.

Returns:

false if at least one clause is non-empty, true otherwise

openParen

protected void openParen(AppendableExt app)
                  throws IOException

Appends an open parenthesis to the given AppendableExt if disableParens is true, otherwise does nothing.

Throws:

IOException

closeParen

protected void closeParen(AppendableExt app)
                   throws IOException

Appends a close parenthesis to the given AppendableExt if disableParens is true, otherwise does nothing.

Throws:

IOException

appendCustomIfNotNull

protected void appendCustomIfNotNull(AppendableExt app,
                                     SqlObject obj)
                              throws IOException

Appends the given custom clause to the given AppendableExt, handling null and enclosing parens.

Throws:

IOException

appendNestedClauses

protected void appendNestedClauses(AppendableExt app,
                                   SqlObjectList<? extends com.healthmarketscience.sqlbuilder.NestableClause> nestedClauses)
                            throws IOException

Appends the given nested clauses to the given AppendableExt, handling empty nested clauses and enclosing parens.

Throws:

IOException