org.eclipse.smila.search.api.helper
Class QueryParameterAccessor

java.lang.Object
  org.eclipse.smila.processing.parameters.ParameterAccessor
      org.eclipse.smila.search.api.helper.QueryParameterAccessor

Direct Known Subclasses:

SolrQueryParameterAccessor

public class QueryParameterAccessor
extends ParameterAccessor

access to Query parameters as defined in the SMILA search API. Sets the parameter attribute to null, i.e. parameters are expected at root level. See description of Search API at http://wiki.eclipse.org/SMILA/Documentation/Search

Field Summary

Fields inherited from class org.eclipse.smila.processing.parameters.ParameterAccessor

_blackboard, _config, _parametersAttribute, _recordId, DEFAULT_PARAMETERS_ATTRIBUTE

Constructor Summary

QueryParameterAccessor(Blackboard blackboard, AnyMap configuration, java.lang.String queryRecordId)
create accessor for given blackboard and request record.

QueryParameterAccessor(Blackboard blackboard, java.lang.String queryRecordId)
create accessor for given blackboard and request record.

Method Summary

java.util.List<AnyMap>	getFacetByConfig()
AnyMap	getFilter(java.lang.String attributeName)
java.util.Iterator<java.lang.String>	getFilterAttributeNames()
java.util.LinkedHashMap<java.lang.String,AnyMap>	getFilters() The returned map is cached internally and also built when calling any of the other Filter methods.
AnyMap	getGroupbyConfig()
AnySeq	getHighlightConfig()
java.lang.String	getIndexName() get the value of indexName parameter.
java.lang.String	getLanguage() get the value of language parameter.
int	getMaxCount() get the value of result size parameter.
int	getOffset() get the value of result offset parameter.
java.lang.String	getQuery() access to predefined parameters as supported in the search API.
java.util.List<Value>	getQueryAttributeValues(java.lang.String name) Performance: this will iterate thru the entries in the query Map each time!
java.lang.String	getQueryRequired() access to predefined parameters as supported in the search API.
Any	getRankingConfig()
java.util.List<java.lang.String>	getResultAttributes() Get the values (names of attributes) of resultAttributes parameter.
java.util.Iterator<java.lang.String>	getSortByAttributeNames() get iterator on names of attributes that have an order-by parameter set.
java.util.LinkedHashMap<java.lang.String,QueryConstants.SortOrder>	getSortByConfig()
QueryConstants.SortOrder	getSortOrder(java.lang.String attributeName) get sort order for an attribute.
double	getThreshold() get the value of threshold parameter.
boolean	hasFilters()
boolean	hasGroupbyConfig()
boolean	hasHighlightConfig()
boolean	hasQueryAttribute(java.lang.String name)
boolean	hasQueryAttributes()
ParameterAccessor	setCurrentRecord(java.lang.String queryRecordId) set the ID of the record to read parameters from.
ParameterAccessor	setPipeletConfiguration(AnyMap config) set the configuration of the current pipelet, to read fallback values for missing parameters.

Methods inherited from class org.eclipse.smila.processing.parameters.ParameterAccessor

getBooleanParameter, getFloatParameter, getIntParameter, getParameter, getParameterAny, getParameterAttribute, getParameters, getRequiredBooleanParameter, getRequiredFloatParameter, getRequiredIntParameter, getRequiredParameter, getRequiredParameters, getSubParameter, getSubParameters, setParameterAttribute

Methods inherited from class java.lang.Object

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

Constructor Detail

QueryParameterAccessor

public QueryParameterAccessor(Blackboard blackboard,
                              java.lang.String queryRecordId)

create accessor for given blackboard and request record.

Parameters:

blackboard - blackboard instance.

queryRecordId - search request record

QueryParameterAccessor

public QueryParameterAccessor(Blackboard blackboard,
                              AnyMap configuration,
                              java.lang.String queryRecordId)

create accessor for given blackboard and request record.

Parameters:

blackboard - blackboard instance.

configuration - pipelet configuration

queryRecordId - search request record

Method Detail

setCurrentRecord

public ParameterAccessor setCurrentRecord(java.lang.String queryRecordId)

set the ID of the record to read parameters from.

Overrides:

setCurrentRecord in class ParameterAccessor

Parameters:

queryRecordId - current record to proces.

Returns:

"this", make it easier to use this method immediately after constructor.

setPipeletConfiguration

public ParameterAccessor setPipeletConfiguration(AnyMap config)

set the configuration of the current pipelet, to read fallback values for missing parameters.

Overrides:

setPipeletConfiguration in class ParameterAccessor

Parameters:

config - pipelet configuration.

Returns:

"this", make it easier to use this method immediately after constructor

getQuery

public java.lang.String getQuery()

access to predefined parameters as supported in the search API.

Returns:

textual query string if query is a simple Val, otherwise null.

getQueryRequired

public java.lang.String getQueryRequired()
                                  throws MissingParameterException

access to predefined parameters as supported in the search API.

Returns:

textual query string.

Throws:

MissingParameterException - if query is not set.

hasQueryAttributes

public boolean hasQueryAttributes()

Returns:

true, if the request contains a fielded query instead of a simple query string.

hasQueryAttribute

public boolean hasQueryAttribute(java.lang.String name)

Parameters:

name - attribute name

Returns:

true, if the request contains a fielded query with the given attribute.

getQueryAttributeValues

public java.util.List<Value> getQueryAttributeValues(java.lang.String name)

Performance: this will iterate thru the entries in the query Map each time!

Parameters:

name - query attribute name

Returns:

values of query attribute. Single Val elements are trearted as a Seq with one value. Null if, query is no Map or the attribute cannot be found.

getMaxCount

public int getMaxCount()

get the value of result size parameter. Default value is 10.

Returns:

value of result size parameter.

getOffset

public int getOffset()

get the value of result offset parameter. Default value is 0.

Returns:

value of result offset parameter

getThreshold

public double getThreshold()

get the value of threshold parameter. Default value is 0.0.

Returns:

value of threshold parameter

getLanguage

public java.lang.String getLanguage()

get the value of language parameter. Default value is null

Returns:

value of language parameter

getIndexName

public java.lang.String getIndexName()

get the value of indexName parameter. Default value is null

Returns:

value of indexName parameter

getResultAttributes

public java.util.List<java.lang.String> getResultAttributes()

Get the values (names of attributes) of resultAttributes parameter. Default value is an empty list.

Returns:

values of resultAttributes parameter

getSortByConfig

public java.util.LinkedHashMap<java.lang.String,QueryConstants.SortOrder> getSortByConfig()

Returns:

sortby configs by attribute

getSortByAttributeNames

public java.util.Iterator<java.lang.String> getSortByAttributeNames()

get iterator on names of attributes that have an order-by parameter set. Order of iteration is order of precedence in ordering.

Returns:

names of attributes to be ordered.

getSortOrder

public QueryConstants.SortOrder getSortOrder(java.lang.String attributeName)

get sort order for an attribute.

Parameters:

attributeName - attribute name

Returns:

order for attribute, if specified, or null else.

getFilters

public java.util.LinkedHashMap<java.lang.String,AnyMap> getFilters()

The returned map is cached internally and also built when calling any of the other Filter methods. Changes to the filters after caching has happend will not be reflected anymore.

Note, if there are >1 Filters for the same attribute, only the last in the Filters-Seq will be returned.

Returns:

filters by attribute

hasFilters

public boolean hasFilters()

Returns:

true if query has filters on attributes.

getFilterAttributeNames

public java.util.Iterator<java.lang.String> getFilterAttributeNames()

Returns:

iterator on names of attributes for which filters are defined

getFilter

public AnyMap getFilter(java.lang.String attributeName)

Parameters:

attributeName - filter attribute name

Returns:

attribute filter. Null, if no filter is set.

getRankingConfig

public Any getRankingConfig()

Returns:

content of ranking parameter.

getFacetByConfig

public java.util.List<AnyMap> getFacetByConfig()

Returns:

content of facetby parameter

hasGroupbyConfig

public boolean hasGroupbyConfig()

Returns:

true if groupby configuration isn't empty, false otherwise.

getGroupbyConfig

public AnyMap getGroupbyConfig()

Returns:

the groupby configuration as AnyMap or null.

hasHighlightConfig

public boolean hasHighlightConfig()

Returns:

true if highlight configuration isn't empty, false otherwise.

getHighlightConfig

public AnySeq getHighlightConfig()

Returns:

the highlight configuration as AnyMap or null.