com.exalead.search.query.prefix

Class UnixTimestampPrefix

java.lang.Object

com.exalead.search.query.node.NodeVisitor

com.exalead.search.query.prefix.BaseNumericalPrefix

com.exalead.search.query.prefix.UnixTimestampPrefix

All Implemented Interfaces:

PrefixHandler

public class UnixTimestampPrefix
extends BaseNumericalPrefix

This handler replaces an untransformed PrefixNode containing unix timestamp leaves by a branch with date nodes targeting a given index field.
The date nodes are Numerical nodes under the format used by the index.

Nested Class Summary

Nested classes/interfaces inherited from interface com.exalead.search.query.prefix.PrefixHandler

PrefixHandler.ErrorBehaviour, PrefixHandler.NoHooks, PrefixHandler.Phase

Field Summary

Fields inherited from class com.exalead.search.query.prefix.BaseNumericalPrefix

defaultOperator, errorBehaviour, lsb, msb, numop, targetIndexField, useAttributes

Constructor Summary

Constructors

Constructor and Description
UnixTimestampPrefix(java.lang.String targetIndexField, IndexOptions.NumericalOperator defaultOp, boolean time) Create a date or time prefix handler.

Method Summary

Modifier and Type	Method and Description
Node	handlePrefix(PrefixHandler.Phase phase, PrefixNode node, NodeVisitor parentVisitor, QueryContext queryContext) Handle a given prefix node.

Methods inherited from class com.exalead.search.query.prefix.BaseNumericalPrefix

onDeinit, onInit, onQuery, setErrorBehaviour, setParams

Methods inherited from class com.exalead.search.query.node.NodeVisitor

visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visitNary, visitUnary

Methods inherited from class java.lang.Object

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

Constructor Detail

UnixTimestampPrefix

public UnixTimestampPrefix(java.lang.String targetIndexField,
                           IndexOptions.NumericalOperator defaultOp,
                           boolean time)

Create a date or time prefix handler.

Parameters:

targetIndexField - The index field to target

defaultOp - Overrides the operator if default ":" is used

time - True if the targeted index field is of type time, false otherwise (type date)

Method Detail

handlePrefix

public Node handlePrefix(PrefixHandler.Phase phase,
                         PrefixNode node,
                         NodeVisitor parentVisitor,
                         QueryContext queryContext)
                  throws QueryProcessingException

Description copied from interface: PrefixHandler

Handle a given prefix node.

Specified by:

handlePrefix in interface PrefixHandler

Overrides:

handlePrefix in class BaseNumericalPrefix

Parameters:

phase - the "Phase" of the prefix handler, indicating how far in the pipeline we are.In the standard chain, 4 phases are defined: PRE_LINGUISTIC, PRE_TRANSFORM, PRE_MAP, POST_MAP

node - The prefix node to handle

parentVisitor - If your handler is not "terminal", ie, if it supports nesting, it should call this visitor to visit the prefix node's content, additionally to performing its work. Warning: this can be null, in that case, you must not delegate.
For example, a "URL" node handler might be terminal (ie, it will "eat" all its content), whereas a "soundlike" handler will not be. It will only set the correct expansion options and pass control to lower prefixes, to support things like: soundslike:(foo OR bar OR text:coin)

queryContext - access to overridable query-related parameters

Throws:

QueryProcessingException