Package org.apache.solr.handler.dataimport

Class DateFormatEvaluator

java.lang.Object

org.apache.solr.handler.dataimport.Evaluator

org.apache.solr.handler.dataimport.DateFormatEvaluator

public class DateFormatEvaluator
extends Evaluator

Formats values using a given date format.

Pass three parameters:

• An EntityField or a date expression to be parsed with the DateMathParser class If the value is in a String, then it is assumed to be a datemath expression, otherwise it resolved using a VariableResolver instance
• A date format see SimpleDateFormat for the syntax.
• The Locale to parse. (optional. Defaults to the Root Locale)

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.solr.handler.dataimport.Evaluator

Evaluator.VariableWrapper

Field Summary

Fields

Modifier and Type	Field	Description
protected Map<String,Locale>	availableLocales
protected Set<String>	availableTimezones
static String	DEFAULT_DATE_FORMAT

Fields inherited from class org.apache.solr.handler.dataimport.Evaluator

DATE_FORMAT_EVALUATOR, ESCAPE_SOLR_QUERY_CHARS, SQL_ESCAPE_EVALUATOR, URL_ENCODE_EVALUATOR

Constructor Summary

Constructors

Constructor	Description
DateFormatEvaluator()

Method Summary

Modifier and Type	Method	Description
String	evaluate(String expression, Context context)	Return a String after processing an expression and a VariableResolver
protected Date	evaluateString(String datemathfmt, Locale locale, TimeZone tz)	NOTE: declared as a method to allow for extensibility
protected Date	evaluateWrapper(Evaluator.VariableWrapper variableWrapper, Locale locale, TimeZone tz)	NOTE: declared as a method to allow for extensibility
protected Object	resolveWrapper(Evaluator.VariableWrapper variableWrapper, Locale locale, TimeZone tz)	NOTE: declared as a method to allow for extensibility

Methods inherited from class org.apache.solr.handler.dataimport.Evaluator

getVariableWrapper, parseParams

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_DATE_FORMAT

public static final String DEFAULT_DATE_FORMAT

See Also:

Constant Field Values

availableLocales

protected Map<String,Locale> availableLocales

availableTimezones

protected Set<String> availableTimezones

Constructor Detail

DateFormatEvaluator

public DateFormatEvaluator()

Method Detail

evaluate

public String evaluate(String expression,
                       Context context)

Description copied from class: Evaluator

Return a String after processing an expression and a VariableResolver

Specified by:

evaluate in class Evaluator

Parameters:

expression - string to be evaluated

context - instance

Returns:

the value of the given expression evaluated using the resolver

See Also:

VariableResolver

evaluateWrapper

protected Date evaluateWrapper(Evaluator.VariableWrapper variableWrapper,
                               Locale locale,
                               TimeZone tz)

NOTE: declared as a method to allow for extensibility

Returns:

the result of evaluating a string

WARNING: This API is experimental and might change in incompatible ways in the next release.

this API is experimental and subject to change

evaluateString

protected Date evaluateString(String datemathfmt,
                              Locale locale,
                              TimeZone tz)

NOTE: declared as a method to allow for extensibility

Returns:

the result of evaluating a string

WARNING: This API is experimental and might change in incompatible ways in the next release.

resolveWrapper

protected Object resolveWrapper(Evaluator.VariableWrapper variableWrapper,
                                Locale locale,
                                TimeZone tz)

NOTE: declared as a method to allow for extensibility

Returns:

the result of resolving the variable wrapper

WARNING: This API is experimental and might change in incompatible ways in the next release.