git clone https://github.com/Softmotions/ejdb.git
mkdir ./build && cd ./build
cmake .. -DCMAKE_BUILD_TYPE=Release
make package

sudo add-apt-repository ppa:adamansky/ejdb2
sudo apt-get install ejdb2

# Display installed files
dpkg -L ejdb2

# Using Homebrew https://brew.sh

brew install ejdb

# Note: nodejs binding is not supported on Windows
# Prerequisites: Clang or GCC, CMake, Make

yarn add ejdb2_node

/// Sample records put/query example
#include <ejdb2/ejdb2.h>

#define CHECK(rc_)          \
  if (rc_) {                 \
    iwlog_ecode_error3(rc_); \
    return 1;                \
  }

static iwrc documents_visitor(EJDB_EXEC *ctx, const EJDB_DOC doc, int64_t *step) {
  // Print document to stderr
  return jbl_as_json(doc->raw, jbl_fstream_json_printer, stderr, JBL_PRINT_PRETTY);
}

int main() {

  EJDB_OPTS opts = {
    .kv = {
      .path = "example.db",
      .oflags = IWKV_TRUNC
    }
  };
  EJDB db;     // EJDB2 storage handle
  int64_t id;  // Document id placeholder
  JQL q = 0;   // Query instance
  JBL jbl = 0; // Json document

  iwrc rc = ejdb_init();
  CHECK(rc);

  rc = ejdb_open(&opts, &db);
  CHECK(rc);

  // First record
  rc = jbl_from_json(&jbl, "{\"name\":\"Bianca\", \"age\":4}");
  RCGO(rc, finish);
  rc = ejdb_put_new(db, "parrots", jbl, &id);
  RCGO(rc, finish);
  jbl_destroy(&jbl);

  // Second record
  rc = jbl_from_json(&jbl, "{\"name\":\"Darko\", \"age\":8}");
  RCGO(rc, finish);
  rc = ejdb_put_new(db, "parrots", jbl, &id);
  RCGO(rc, finish);
  jbl_destroy(&jbl);

  // Now execute query
  rc =  jql_create(&q, "parrots", "/[age > :age]");
  RCGO(rc, finish);

  EJDB_EXEC ux = {
    .db = db,
    .q = q,
    .visitor = documents_visitor
  };

  // Set query placeholder value.
  // Actual query will be /[age > 3]
  rc = jql_set_i64(q, "age", 0, 3);
  RCGO(rc, finish);
  
  rc = ejdb_exec(&ux); // Execute query

finish:
  jql_destroy(&q);
  jbl_destroy(&jbl);
  ejdb_close(&db);
  CHECK(rc);
  return 0;
}

/// myapp.c
#include <ejdb2/ejdb2.h>
#include <stdlib.h>

int main(int argc, char const *argv[]) {
  EJDB db;
  EJDB_OPTS opts = {
    .kv = { .path = "myapp.db" },
    .http = {
      .enabled = true,
      .blocking = true,
      .port = 9191,
      .bind = "localhost"
    }
  };
  iwrc rc = ejdb_open(&opts, &db); // blocked until http server shutdown
  if (rc) {
   iwlog_ecode_error3(rc);
   exit(1);
  }
  ejdb_close(&db);
  return 0;
}

import { EJDB2 } from 'ejdb2_node';

async function run() {
  const db = await EJDB2.open('example.db', { truncate: true });

  var id = await db.put('parrots', {'name': 'Bianca', 'age': 4});
  console.log(`Bianca record: ${id}`);

  id = await db.put('parrots', {'name': 'Darko', 'age': 8});
  console.log(`Darko record: ${id}`);

  const q = db.createQuery('/[age > :age]', 'parrots');

  for await (const doc of q.setNumber('age', 3).stream()) {
    console.log(`Found ${doc}`);
  }

  await db.close();
}

run();

package com.softmotions.ejdb2.example;

import com.softmotions.ejdb2.EJDB2;
import com.softmotions.ejdb2.EJDB2Builder;

public class EJDB2Example {

  public static void main(String[] args) {
    try (EJDB2 db = new EJDB2Builder("example.db").truncate().open()) {
      long id = db.put("parrots", "{\"name\":\"Bianca\", \"age\": 4}");
      System.out.println("Bianca record: " + id);

      id = db.put("parrots", "{\"name\":\"Darko\", \"age\": 8}");
      System.out.println("Darko record: " + id);

      db.createQuery("@parrots/[age > :age]").setLong("age", 3).execute((docId, doc) -> {
        System.out.println(String.format("Found %d %s", docId, doc));
        return 1;
      });
    }
  }
}    

import "package:ejdb2_dart/ejdb2_dart.dart";

void main() async {
  final db = await EJDB2.open('example.db', truncate: true);

  var id = await db.put('parrots', {'name': 'Bianca', 'age': 4});
  print('Bianca record: ${id}');

  id = await db.put('parrots', {'name': 'Darko', 'age': 8});
  print('Darko record: ${id}');

  final q = db.createQuery('/[age > :age]', 'parrots');
  await for (final doc in q.setInt('age', 3).execute()) {
    print('Found $doc');
  }
  await db.close();
}  

import EJDB2

let db = try EJDB2Builder("example.db").withTruncate().open()

var id = try db.put("parrots", ["name": "Bianca", "age": 4])
print("Bianca record: \(id)")

id = try db.put("parrots", ["name": "Darko", "age": 8])
print("Bianca record: \(id)")

try db.createQuery("@parrots/[age > :?]").setInt64(0, 3).list().forEach({
  print("Found \($0)")
})

try? db.close()

# EJDB 2 standalone REST/Websocket server
./jbs&

# Save JSON document
curl --data-raw '{"name": "Andy"}'      http://localhost:9191/persons

# Query document
curl --data-raw '@persons/[name=Andy]'  http://localhost:9191
1	{"name": "Andy"}