documents/probe.queryOperators

Miembros

---

<static> $eq

Descripción

$eq performs a === comparison by comparing the value directly if it is an atomic value.
otherwise if it is an array, it checks to see if the value looked for is in the array.
{field: value} or {field: {$eq : value}} or {array: value} or {array: {$eq : value}}

Ejemplos

var probe = require("documents/probe");
probe.find( data, {categories : "cat1"} );
// is the same as
probe.find( data, {categories : {$eq: "cat1"}} );

Detalles

Fuente

documents/probe.js, line 347

---

<static> $ne

Descripción

$ne performs a !== comparison by comparing the value directly if it is an atomic value. Otherwise, if it is an array
this is performs a "not in array".
'{field: {$ne : value}}or '{array: {$ne : value}}

Ejemplos

var probe = require("documents/probe");
probe.find( data, {"name.first" : {$ne : "Sheryl"}} );

Detalles

Fuente

documents/probe.js, line 369

---

<static> $all

Descripción

$all checks to see if all of the members of the query are included in an array
{array: {$all: [val1, val2, val3]}}

Ejemplos

var probe = require("documents/probe");
probe.find( data, {"categories" : {$all : ["cat4", "cat2", "cat1"]}} );

Detalles

Fuente

documents/probe.js, line 389

---

<static> $gt

Descripción

$gt Sees if a field is greater than the value
{field: {$gt: value}}

Ejemplos

var probe = require("documents/probe");
probe.find( data, {"age" : {$gt : 24}} );

Detalles

Fuente

documents/probe.js, line 409

---

<static> $gte

Descripción

$gte Sees if a field is greater than or equal to the value
{field: {$gte: value}}

Ejemplos

var probe = require("documents/probe");
probe.find( data, {"age" : {$gte : 50}} );

Detalles

Fuente

documents/probe.js, line 422

---

<static> $lt

Descripción

$lt Sees if a field is less than the value
{field: {$lt: value}}

Ejemplos

var probe = require("documents/probe");
probe.find( data, {"age" : {$lt : 24}} );

Detalles

Fuente

documents/probe.js, line 435

---

<static> $lte

Descripción

$lte Sees if a field is less than or equal to the value
{field: {$lte: value}}

Ejemplos

var probe = require("documents/probe");
probe.find( data, {"age" : {$lte : 50}} );

Detalles

Fuente

documents/probe.js, line 448

---

<static> $in

Descripción

$in Sees if a field has one of the values in the query
{field: {$in: [test1, test2, test3,...]}}

Ejemplos

var probe = require("documents/probe");
probe.find( data, {"age" : {$in : [24, 28, 60]}} );

Detalles

Fuente

documents/probe.js, line 461

---

<static> $nin

Descripción

$nin Sees if a field has none of the values in the query
{field: {$nin: [test1, test2, test3,...]}}

Ejemplos

var probe = require("documents/probe");
probe.find( data, {"age" : {$nin : [24, 28, 60]}} );

Detalles

Fuente

documents/probe.js, line 477

---

<static> $exists

Descripción

$exists Sees if a field exists.
{field: {$exists: true|false}}

Ejemplos

var probe = require("documents/probe");
probe.find( data, {"name.middle" : {$exists : true}} );

Detalles

Fuente

documents/probe.js, line 493

---

<static> $mod

Descripción

Checks equality to a modulus operation on a field
{field: {$mod: [divisor, remainder]}}

Ejemplos

var probe = require("documents/probe");
probe.find( data, {"age" : {$mod : [2, 0]}} );

Detalles

Fuente

documents/probe.js, line 506

---

<static> $size

Descripción

Compares the size of the field/array to the query. This can be used on arrays, strings and objects (where it will count keys)
{'field|array: {$size: value}}`

Ejemplos

var probe = require("documents/probe");
probe.find( data, {attr : {$size : 3}} );

Detalles

Fuente

documents/probe.js, line 525

---

<static> $regex

Descripción

Performs a regular expression test againts the field
{field: {$regex: re, $options: reOptions}}

Ejemplos

var probe = require("documents/probe");
probe.find( data, {"name.first" : {$regex : "m*", $options : "i"}} );

Detalles

Fuente

documents/probe.js, line 538

---

<static> $elemMatch

Descripción

This is like $all except that it works with an array of objects or value. It checks to see the array matches all
of the conditions of the query
{array: {$elemMatch: {path: value, path: {$operation: value2}}}

Ejemplos

var probe = require("documents/probe");
probe.find( data, {attr : {$elemMatch : [
 {color : "red", "hand" : "left"}
]}} );

Detalles

Fuente

documents/probe.js, line 552

---

<static> $and

Descripción

Returns true if all of the conditions of the query are met
{$and: [query1, query2, query3]}

Ejemplos

var probe = require("documents/probe");
probe.find( data, {$and : [
     {"name.first" : "Mildred"},
     {"name.last" : "Graves"}
]} );

Detalles

Fuente

documents/probe.js, line 579

---

<static> $or

Descripción

Returns true if any of the conditions of the query are met
{$or: [query1, query2, query3]}

Ejemplos

var probe = require("documents/probe");
probe.find( data, {$or : [
     "age" : {$in : [24, 28, 60]}},
     {categories : "cat1"}
]} );

Detalles

Fuente

documents/probe.js, line 608

---

<static> $nor

Descripción

Returns true if none of the conditions of the query are met
{$nor: [query1, query2, query3]}

Ejemplos

var probe = require("documents/probe");
probe.find( data, {$nor : [
     {"age" : {$in : [24, 28, 60]}},
     {categories : "cat1"}
]} );

Detalles

Fuente

documents/probe.js, line 635

---

<static> $not

Descripción

Logical NOT on the conditions of the query
{$not: [query1, query2, query3]}

Ejemplos

var probe = require("documents/probe");
probe.find( data, {$not : {"age" : {$lt : 24}}} );

Detalles

Fuente

documents/probe.js, line 662