Package com.redis.lettucemod.search.querybuilder

Class QueryBuilder

java.lang.Object

com.redis.lettucemod.search.querybuilder.QueryBuilder

public class QueryBuilder
extends java.lang.Object

Created by mnunberg on 2/23/18. This class contains methods to construct query nodes. These query nodes can be added to parent query nodes (building a chain) or used as the root query node. You can use

 import static
 

for these helper methods.

Method Summary

Modifier and Type	Method	Description
static QueryNode	disjunct(Node... n)	Create a disjunct node.
static QueryNode	disjunct(java.lang.String field, Value... values)	Create a disjunct node using one or more values.
static QueryNode	disjunct(java.lang.String field, java.lang.String... values)	Create a disjunct node using one or more values.
static QueryNode	disjunctUnion(Node... n)	Create a disjunct union node.
static QueryNode	disjunctUnion(java.lang.String field, Value... values)
static QueryNode	disjunctUnion(java.lang.String field, java.lang.String... values)
static QueryNode	intersect(Node... n)	Create a new intersection node with child nodes.
static QueryNode	intersect(java.lang.String field, Value... values)	Create a new intersection node with a field-value pair.
static QueryNode	intersect(java.lang.String field, java.lang.String stringValue)	Helper method to create a new intersection node with a string value.
static QueryNode	optional(Node... n)	Create an optional node.
static QueryNode	optional(java.lang.String field, Value... values)
static QueryNode	union(Node... n)	Create a union node.
static QueryNode	union(java.lang.String field, Value... values)	Create a union node which can match an one or more values
static QueryNode	union(java.lang.String field, java.lang.String... values)	Convenience method to match one or more strings.

Methods inherited from class java.lang.Object

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

Method Detail

intersect

public static QueryNode intersect(Node... n)

Create a new intersection node with child nodes. An intersection node is true if all its children are also true

Parameters:

n - sub-condition to add

Returns:

The node

intersect

public static QueryNode intersect(java.lang.String field,
                                  Value... values)

Create a new intersection node with a field-value pair.

Parameters:

field - The field that should contain this value. If this value is empty, then any field will be checked.

values - Value to check for. The node will be true only if the field (or any field) contains all of the values

Returns:

The node

intersect

public static QueryNode intersect(java.lang.String field,
                                  java.lang.String stringValue)

Helper method to create a new intersection node with a string value.

Parameters:

field - The field to check. If left null or empty, all fields will be checked.

stringValue - The value to check

Returns:

The node

union

public static QueryNode union(Node... n)

Create a union node. Union nodes evaluate to true if any of its children are true

Parameters:

n - Child node

Returns:

The union node

union

public static QueryNode union(java.lang.String field,
                              Value... values)

Create a union node which can match an one or more values

Parameters:

field - Field to check. If empty, all fields are checked

values - Values to search for. The node evaluates to true if field matches any of the values

Returns:

The union node

union

public static QueryNode union(java.lang.String field,
                              java.lang.String... values)

Convenience method to match one or more strings. This is equivalent to union(field, value(v1), value(v2), value(v3)) ...

Parameters:

field - Field to match

values - Strings to check for

Returns:

The union node

disjunct

public static QueryNode disjunct(Node... n)

Create a disjunct node. Disjunct nodes are true iff any of its children are not true. Conversely, this node evaluates to false if all its children are true.

Parameters:

n - Child nodes to add

Returns:

The disjunct node

disjunct

public static QueryNode disjunct(java.lang.String field,
                                 Value... values)

Create a disjunct node using one or more values. The node will evaluate to true iff the field does not match any of the values.

Parameters:

field - Field to check for (empty or null for any field)

values - The values to check for

Returns:

The node

disjunct

public static QueryNode disjunct(java.lang.String field,
                                 java.lang.String... values)

Create a disjunct node using one or more values. The node will evaluate to true iff the field does not match any of the values.

Parameters:

field - Field to check for (empty or null for any field)

values - The values to check for

Returns:

The node

disjunctUnion

public static QueryNode disjunctUnion(Node... n)

Create a disjunct union node. This node evaluates to true if all of its children are not true. Conversely, this node evaluates as false if any of its children are true.

Parameters:

n -

Returns:

The node

disjunctUnion

public static QueryNode disjunctUnion(java.lang.String field,
                                      Value... values)

disjunctUnion

public static QueryNode disjunctUnion(java.lang.String field,
                                      java.lang.String... values)

optional

public static QueryNode optional(Node... n)

Create an optional node. Optional nodes do not affect which results are returned but they influence ordering and scoring.

Parameters:

n - The node to evaluate as optional

Returns:

The new node

optional

public static QueryNode optional(java.lang.String field,
                                 Value... values)