com.atlassian.jira.plugin.jql.function
Class CascadeOptionFunction

java.lang.Object
  com.atlassian.jira.plugin.jql.function.AbstractJqlFunction
      com.atlassian.jira.plugin.jql.function.CascadeOptionFunction

All Implemented Interfaces:

JqlFunction

public class CascadeOptionFunction
extends AbstractJqlFunction
implements JqlFunction

A function that allows the user to select children of a specific parent option for cascading select fields.

Unlike most functions, this function requires knowledge of the field it was used with, so that it can figure out which options are valid for it to generate.

The function accepts either 1 or 2 arguments:

• One argument (parent) - returns all option ids for the specified option's child options.
• Two arguments (parent, child) - returns all option ids for the specified parent/child option combination.
• Two arguments (parent, "None") - returns all option ids for the specified parent option, and the negative option ids for the children of the parents.

Since:

v4.0

Field Summary

static String	EMPTY_VALUE
static String	FUNCTION_CASCADE_OPTION For building clauses containing this function
static String	QUOTED_EMPTY_VALUE

Constructor Summary

CascadeOptionFunction(JqlSelectOptionsUtil jqlSelectOptionsUtil, SearchHandlerManager searchHandlerManager, CustomFieldManager customFieldManager, JqlCascadingSelectLiteralUtil jqlCascadingSelectLiteralUtil)

Method Summary

JiraDataType	getDataType() Provides the JiraDataType that this function handles and creates values for.
int	getMinimumNumberOfExpectedArguments() This method must return the number of arguments that the function expects to perform its operation correctly.
List<QueryLiteral>	getValues(QueryCreationContext queryCreationContext, FunctionOperand operand, TerminalClause terminalClause) Note: this method returns unconvential query literals.
MessageSet	validate(com.atlassian.crowd.embedded.api.User searcher, FunctionOperand operand, TerminalClause terminalClause) Will validate the function operand's arguments and report back any errors.

Methods inherited from class com.atlassian.jira.plugin.jql.function.AbstractJqlFunction

getFunctionName, getI18n, getModuleDescriptor, init, isList, validateNumberOfArgs

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.atlassian.jira.plugin.jql.function.JqlFunction

getFunctionName, init, isList

Field Detail

FUNCTION_CASCADE_OPTION

public static final String FUNCTION_CASCADE_OPTION

For building clauses containing this function

See Also:

Constant Field Values

EMPTY_VALUE

public static final String EMPTY_VALUE

See Also:

Constant Field Values

QUOTED_EMPTY_VALUE

public static final String QUOTED_EMPTY_VALUE

See Also:

Constant Field Values

Constructor Detail

CascadeOptionFunction

public CascadeOptionFunction(JqlSelectOptionsUtil jqlSelectOptionsUtil,
                             SearchHandlerManager searchHandlerManager,
                             CustomFieldManager customFieldManager,
                             JqlCascadingSelectLiteralUtil jqlCascadingSelectLiteralUtil)

Method Detail

validate

public MessageSet validate(com.atlassian.crowd.embedded.api.User searcher,
                           FunctionOperand operand,
                           TerminalClause terminalClause)

Description copied from interface: JqlFunction

Will validate the function operand's arguments and report back any errors.

Specified by:

validate in interface JqlFunction

Parameters:

searcher - the user performing the search

operand - the operand to validate

terminalClause - the terminal clause that contains the operand

Returns:

a MessageSet which will contain any validation errors or warnings or will be empty if there is nothing to report; never null.

getValues

public List<QueryLiteral> getValues(QueryCreationContext queryCreationContext,
                                    FunctionOperand operand,
                                    TerminalClause terminalClause)

Note: this method returns unconvential query literals. All QueryLiterals returned will have Long values, but they may be either positive or negative. Positive values indicate that the option ids should be included in the results, whereas negative ids mean that they should be excluded.

Specified by:

getValues in interface JqlFunction

Parameters:

queryCreationContext - the context of query creation

operand - the operand to get values from

terminalClause - the terminal clause that contains the operand

Returns:

a list of query literals following the scheme described above; never null.

getMinimumNumberOfExpectedArguments

public int getMinimumNumberOfExpectedArguments()

Description copied from interface: JqlFunction

This method must return the number of arguments that the function expects to perform its operation correctly. If the function can accept a variable number of arguments this value should be the lower limit. It is perfectly legal for a function to take no arguments and return 0 for this method.

Specified by:

getMinimumNumberOfExpectedArguments in interface JqlFunction

Returns:

the number of arguments that the function expects to perform its operation correctly. Must be >=0.

getDataType

public JiraDataType getDataType()

Description copied from interface: JqlFunction

Provides the JiraDataType that this function handles and creates values for. This allows us to infer some information about how it will interact with other elements in the system.

For example, if this returns JiraDataTypes.DATE then we know that we can provide values for any clauses that also specify a data type of DATE.

Specified by:

getDataType in interface JqlFunction

Returns:

the JiraDataType that this function produces values for. Cannot be null.

See Also:

JiraDataTypes