org.openanzo.model.indexer.lucene
Class ModelIndexQuery

java.lang.Object
  org.openanzo.indexer.lucene.LuceneQuery
      org.openanzo.model.indexer.lucene.ModelIndexQuery

All Implemented Interfaces:

IQuery

public class ModelIndexQuery
extends LuceneQuery

Adds a date filter to the query. This stuff should be in another class since it's not indexer-specific. A date range should be specified as part of the query string. It will have the following format: http://openanzo.orgified:date_expression The date expression defines a date range determined by two time expressions. Time expressions can assume one of four forms: 1) a string containing the number of ms that have elapsed since January 1, 1970, 2) * for before/after expressions (see below), 3) a relative time expression, or 4) an absolute time expression. Relative time expressions begin with y (year), mo (month), d (date), * h (hour) or mi (minute). The next character in a relative time expression is '-' (can be interpreted as minus). mo-2 means two months ago, h-4 means four hours ago, etc. Absolute time expressions also begin with y, mo, d, h, or mi. The numbers following specify the exact time, with 4 chars for the year and two for each subsequent time unit. mo200404 means April 2004, mi200505051921 means 7:21pm on May 5, 2005. An absolute time may be passed in alone as a time range. The implied time range goes from the specified time to one time unit beyond the specified time. so modified:mo200506 encapsulates all of June 2005, modified:d20050621 encapsulates all of June 21, 2005. Ranges are of the form start_char time_expr_1 to time_expr_2 end_char. start_char is '[' or '{'. end_char is ']' or '}'. [ and ] include the dates that they are adjacent to, and { and } exclude the dates that they are adjacent to. Note that in the case where both time expressions are relative time expressions, the start_char and end_char must be present but they will be ignored. For relative time expressions, the implied inclusion/exclusion is as follows: [time_expr_1 to time_expr_2}

Author:

Wing Yung (wingyung@us.ibm.com)

Constructor Summary

ModelIndexQuery()
Create a new ModelIndexQuery

Method Summary

void	initialize(java.util.Properties properties) Initializes the query with the properties object.
void	initialize(java.lang.String queryStr) Initializes the query based on the queryStr
void	initialize(java.lang.String defaultField, java.lang.String queryStr) Initializes a simple query.
static void	main(java.lang.String[] args) Tests date parsing

Methods inherited from class org.openanzo.indexer.lucene.LuceneQuery

getFilter, getQuery

Methods inherited from class java.lang.Object

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

Constructor Detail

ModelIndexQuery

public ModelIndexQuery()

Create a new ModelIndexQuery

Method Detail

initialize

public void initialize(java.util.Properties properties)
                throws IndexerException

Description copied from class: LuceneQuery

Initializes the query with the properties object. The properties object is expected to contain the default field to search (org.openanzo.indexer.lucene.query.field) and the text to search for (org.openanzo.indexer.lucene.query.text).

Specified by:

initialize in interface IQuery

Overrides:

initialize in class LuceneQuery

Parameters:

properties - configuration for this query

Throws:

IndexerException

initialize

public void initialize(java.lang.String defaultField,
                       java.lang.String queryStr)
                throws IndexerException

Description copied from class: LuceneQuery

Initializes a simple query. Sets the default field to search, along with the text to search. Note that text may contain other modifiers so that other fields are searched as well.

Specified by:

initialize in interface IQuery

Overrides:

initialize in class LuceneQuery

Parameters:

defaultField - default field to search in this query

queryStr - text query to search for, can use Lucene Query constructs

Throws:

IndexerException

initialize

public void initialize(java.lang.String queryStr)
                throws IndexerException

Description copied from class: LuceneQuery

Initializes the query based on the queryStr

Specified by:

initialize in interface IQuery

Overrides:

initialize in class LuceneQuery

Parameters:

queryStr - query string, can use Lucene Query constructs

Throws:

IndexerException

main

public static void main(java.lang.String[] args)
                 throws IndexerException

Tests date parsing

Parameters:

args -

Throws:

IndexerException