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pg.js
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const Database = require('pg');
const Lo = require('./pg-lo');
const POOLS = {};
const REG_ESCAPE_1 = /'/g;
const REG_ESCAPE_2 = /\\/g;
const REG_PARAMS = /\$\d/g;
const EMPTYARRAY = [];
const BLACKLIST = { dbms: 1 };
const ISOP = { '+': 1, '-': 1, '*': 1, '/': 1, '=': 1, '!': 1, '#': 1 };
const CANSTATS = global.F ? (global.F.stats && global.F.stats.performance && global.F.stats.performance.dbrm != null) : false;
// Convertor: Numeric to number
Database.types.setTypeParser(1700, val => val == null ? null : +val);
var ESCAPE = global.PG_ESCAPE = function(value) {
if (value == null)
return 'null';
var type = typeof(value);
if (type === 'function') {
value = value();
if (value == null)
return 'null';
type = typeof(value);
}
if (type === 'boolean')
return value === true ? 'true' : 'false';
if (type === 'number')
return value.toString();
if (type === 'string')
return pg_escape(value);
if (value instanceof Array)
return pg_escape(value.join(','));
if (value instanceof Date)
return pg_escape(dateToString(value));
return pg_escape(value.toString());
};
function createpool(opt) {
return POOLS[opt.id] ? POOLS[opt.id] : (POOLS[opt.id] = opt.options.native ? new Database.native.Pool(opt.options) : new Database.Pool(opt.options));
}
function createclient(opt) {
return opt.options.native ? new Database.native.Client(opt.options) : new Database.Client(opt.options);
}
function select(client, cmd) {
var builder = cmd.builder;
var opt = builder.options;
var params = [];
var q = 'SELECT ' + FIELDS(builder) + ' FROM ' + opt.table + WHERE(builder, null, null, params);
F.$events.dbms && EMIT('dbms', 'select', opt.table, opt.db, builder);
builder.db.$debug && builder.db.$debug(q);
if (CANSTATS)
F.stats.performance.dbrm++;
client.query(q, params, function(err, response) {
builder.db.busy = false;
err && client.$opt.onerror && client.$opt.onerror(err, q, builder);
var rows = response ? response.rows : EMPTYARRAY;
if (opt.first)
rows = rows.length ? rows[0] : null;
// checks joins
if (!err && builder.$joins) {
client.$dbms._joins(rows, builder);
setImmediate(builder.db.$next);
} else
builder.$callback(err, rows);
});
}
function check(client, cmd) {
var builder = cmd.builder;
var opt = builder.options;
var params = [];
var q = 'SELECT 1 FROM ' + opt.table + WHERE(builder, null, null, params);
F.$events.dbms && EMIT('dbms', 'select', opt.table, opt.db, builder);
if (CANSTATS)
F.stats.performance.dbrm++;
builder.db.$debug && builder.db.$debug(q);
client.query(q, params, function(err, response) {
builder.db.busy = false;
err && client.$opt.onerror && client.$opt.onerror(err, q, builder);
var is = response && response.rows ? response.rows[0] != null : false;
builder.$callback(err, is);
});
}
function query(client, cmd) {
var builder = cmd.builder;
var opt = builder.options;
if (!cmd.value && builder.options.params)
cmd.value = [];
var q = cmd.query + WHERE(builder, null, null, cmd.value);
builder.db.$debug && builder.db.$debug(q);
if (CANSTATS)
F.stats.performance.dbrm++;
F.$events.dbms && EMIT('dbms', 'query', cmd.query, opt.db, builder);
client.query(q, cmd.value, function(err, response) {
builder.db.busy = false;
err && client.$opt.onerror && client.$opt.onerror(err, q, builder);
var rows = response ? response.rows : EMPTYARRAY;
if (opt.first)
rows = rows.length ? rows[0] : null;
builder.$callback(err, rows);
});
}
function command(client, sql, cmd) {
cmd.db.$debug && cmd.db.$debug(sql);
F.$events.dbms && EMIT('dbms', 'query', sql, cmd.db);
if (CANSTATS)
F.stats.performance.dbrm++;
client.query(sql, function(err) {
cmd.db.busy = false;
err && client.$opt.onerror && client.$opt.onerror(err, sql);
cmd.db.$next(err);
});
}
function list(client, cmd) {
var builder = cmd.builder;
var opt = builder.options;
var params = [];
var query = WHERE(builder, true, null, params);
var q;
if (cmd.improved && builder.skip) {
q = 'SELECT ' + FIELDS(builder) + ' FROM ' + opt.table + query + OFFSET(builder);
F.$events.dbms && EMIT('dbms', 'select', opt.table, opt.db, builder);
builder.db.$debug && builder.db.$debug(q);
builder.db.busy = true;
if (CANSTATS)
F.stats.performance.dbrm++;
client.query(q, params, function(err, response) {
builder.db.busy = false;
var rows = response ? response.rows : [];
if (!err && builder.$joins) {
client.$dbms._joins(rows, builder, rows.length);
setImmediate(builder.db.$next);
} else
builder.$callback(err, rows, rows.length);
});
} else {
q = 'SELECT COUNT(1)::int as dbmsvalue FROM ' + opt.table + query;
builder.db.$debug && builder.db.$debug(q);
F.$events.dbms && EMIT('dbms', 'select', opt.table, opt.db, builder);
if (CANSTATS)
F.stats.performance.dbrm++;
client.query(q, params, function(err, response) {
builder.db.busy = false;
err && client.$opt.onerror && client.$opt.onerror(err, q, builder);
var count = err ? 0 : response.rows && response.rows.length ? response.rows[0].dbmsvalue : 0;
var fn = function(err, response) {
builder.db.busy = false;
var rows = response ? response.rows : [];
// checks joins
// client.$dbms._joins(rows, builder);
if (!err && builder.$joins) {
client.$dbms._joins(rows, builder, count);
setImmediate(builder.db.$next);
} else
builder.$callback(err, rows, count);
};
if (count) {
builder.db.busy = true;
q = 'SELECT ' + FIELDS(builder) + ' FROM ' + opt.table + query + OFFSET(builder);
builder.db.$debug && builder.db.$debug(q);
F.$events.dbms && EMIT('dbms', 'select', opt.table, opt.db, builder);
if (CANSTATS)
F.stats.performance.dbrm++;
client.query(q, params, fn);
} else
fn(err, null);
});
}
}
function scalar(client, cmd) {
var builder = cmd.builder;
var opt = builder.options;
var params = [];
var q;
switch (cmd.scalar) {
case 'avg':
case 'min':
case 'sum':
case 'max':
case 'count':
q = 'SELECT ' + cmd.scalar.toUpperCase() + (cmd.scalar !== 'count' ? ('(' + (cmd.field || cmd.name) + ')') : '(1)') + '::int as dbmsvalue FROM ' + opt.table;
break;
case 'group':
q = 'SELECT ' + cmd.name + ', ' + (cmd.field ? ('SUM(' + cmd.field + ')::numeric') : 'COUNT(1)::int') + ' as count FROM ' + opt.table;
break;
}
q = q + WHERE(builder, false, cmd.scalar === 'group' ? cmd.name : null, params);
builder.db.$debug && builder.db.$debug(q);
F.$events.dbms && EMIT('dbms', 'select', opt.table, opt.db, builder);
if (CANSTATS)
F.stats.performance.dbrm++;
client.query(q, params, function(err, response) {
builder.db.busy = false;
err && client.$opt.onerror && client.$opt.onerror(err, q, builder);
var rows = response ? response.rows || EMPTYARRAY : EMPTYARRAY;
if (!cmd.field && cmd.scalar !== 'group')
rows = rows.length ? (rows[0].dbmsvalue || 0) : 0;
builder.$callback(err, rows);
});
}
function abortcommands(client, builder) {
while (builder.db.$commands.length) {
var c = builder.db.$commands.shift();
if (c && c.type === 'commit') {
c.type = 'rollback';
builder.db.$commands.unshift(c);
break;
}
}
}
function insert(client, cmd) {
var builder = cmd.builder;
cmd.builder.options.transform && cmd.builder.options.transform(cmd.builder.value, cmd.builder.db.$output, cmd.builder.db.$lastoutput);
var keys = Object.keys(builder.value);
var params = [];
var fields = [];
var values = [];
var index = 1;
var opt = builder.options;
for (var i = 0; i < keys.length; i++) {
var key = keys[i];
var val = builder.value[key];
if (val === undefined || BLACKLIST[key])
continue;
if (builder.options.fields && builder.options.fields.length) {
var skip = true;
for (var j = 0; j < builder.options.fields.length; j++) {
var field = builder.options.fields[j];
if (field[0] === '-') {
field = field.substring(1);
if (field === key || (ISOP[key[0]] && field === key.substring(1))) {
skip = true;
break;
}
skip = false;
} else if (field === key || (ISOP[key[0]] && field === key.substring(1))) {
skip = false;
break;
} else
skip = false;
}
if (skip)
continue;
}
var raw = false;
switch (key[0]) {
case '-':
case '+':
case '*':
case '/':
case '>':
case '<':
key = key.substring(1);
break;
case '=':
key = key.substring(1);
raw = true;
break;
case '#':
continue;
case '!':
// toggle
key = key.substring(1);
if (val)
val = true;
else
val = false;
break;
}
fields.push('"' + key + '"');
if (raw) {
values.push(val);
} else {
values.push('$' + index++);
params.push(val == null ? null : typeof(val) === 'function' ? val(builder.value) : val);
}
}
var q = 'INSERT INTO ' + opt.table + ' (' + fields.join(',') + ') VALUES(' + values.join(',') + ')' + (builder.$primarykey ? (' RETURNING ' + builder.$primarykey) : '');
builder.db.$debug && builder.db.$debug(q);
F.$events.dbms && EMIT('dbms', 'insert', opt.table, opt.db, builder);
if (CANSTATS)
F.stats.performance.dbwm++;
client.query(q, params, function(err, response) {
// Transaction is aborted
if (err && client.$dbmstransaction) {
client.$dbmstransaction = true;
abortcommands(client, builder);
}
builder.db.busy = false;
err && client.$opt.onerror && client.$opt.onerror(err, q, builder);
builder.$callback(err, err == null ? (response.rows && response.rows.length ? response.rows[0][builder.$primarykey] : 1) : 0);
});
}
function insertexists(client, cmd) {
var builder = cmd.builder;
var opt = builder.options;
var q = 'SELECT 1 as dbmsvalue FROM ' + opt.table + WHERE(builder);
builder.db.$debug && builder.db.$debug(q);
F.$events.dbms && EMIT('dbms', 'select', opt.table, opt.db, builder);
if (CANSTATS)
F.stats.performance.dbrm++;
client.query(q, function(err, response) {
builder.db.busy = false;
err && client.$opt.onerror && client.$opt.onerror(err, q, builder);
var rows = response ? response.rows : EMPTYARRAY;
if (rows.length)
builder.$callback(err, 0);
else
insert(client, cmd);
});
}
function modify(client, cmd) {
cmd.builder.options.transform && cmd.builder.options.transform(cmd.builder.value, cmd.builder.db.$output, cmd.builder.db.$lastoutput);
var keys = Object.keys(cmd.builder.value);
var fields = [];
var params = [];
var index = 1;
for (var i = 0; i < keys.length; i++) {
var key = keys[i];
var val = cmd.builder.value[key];
if (val === undefined || BLACKLIST[key])
continue;
if (cmd.builder.options.equal && cmd.builder.options.equal.indexOf(key) !== -1)
continue;
if (cmd.builder.options.fields && cmd.builder.options.fields.length) {
var skip = true;
for (var j = 0; j < cmd.builder.options.fields.length; j++) {
var field = cmd.builder.options.fields[j];
if (field[0] === '-') {
field = field.substring(1);
if (field === key || (ISOP[key[0]] && field === key.substring(1))) {
skip = true;
break;
}
skip = false;
} else if (field === key || (ISOP[key[0]] && field === key.substring(1))) {
skip = false;
break;
} else
skip = false;
}
if (skip)
continue;
}
var c = key[0];
var type;
if (typeof(val) === 'function')
val = val(cmd.builder.value);
switch (c) {
case '-':
case '+':
case '*':
case '/':
params.push(val ? val : 0);
key = key.substring(1);
type = '"' + key + '"=COALESCE(' + key + ',0)' + c + '$' + (index++);
break;
case '>':
case '<':
params.push(val ? val : 0);
key = key.substring(1);
type = '"' + key + '"=' + (c === '>' ? 'GREATEST' : 'LEAST') + '(' + key + ',$' + (index++) + ')';
break;
case '!':
// toggle
key = key.substring(1);
type = '"' + key + '"=NOT ' + key;
break;
case '=':
case '#':
// raw
type = '"' + key.substring(1) + '"=' + val;
break;
default:
params.push(val);
type = '"' + key + '"=$' + (index++);
break;
}
type && fields.push(type);
}
var builder = cmd.builder;
var opt = builder.options;
if (opt.equal) {
for (var i = 0; i < opt.equal.length; i++)
cmd.builder.where(opt.equal[i], builder.value[opt.equal[i]]);
}
var q = 'WITH rows AS (UPDATE ' + opt.table + ' SET ' + fields + WHERE(builder, true, null, params) + ' RETURNING 1) SELECT count(1)::int as dbmsvalue FROM rows';
builder.db.$debug && builder.db.$debug(q);
F.$events.dbms && EMIT('dbms', 'update', opt.table, opt.db, cmd.builder);
if (CANSTATS)
F.stats.performance.dbwm++;
client.query(q, params, function(err, response) {
// Transaction is aborted
if (err && client.$dbmstransaction) {
client.$dbmstransaction = true;
abortcommands(client, builder);
}
builder.db.busy = false;
err && client.$opt.onerror && client.$opt.onerror(err, q, builder);
var rows = response ? response.rows || EMPTYARRAY : EMPTYARRAY;
rows = rows.length ? rows[0].dbmsvalue : 0;
if (!rows && cmd.insert) {
if (cmd.insert !== true)
cmd.builder.value = cmd.insert;
cmd.builder.options.insert && cmd.builder.options.insert(cmd.builder.value, cmd.builder.options.insertparams);
insert(client, cmd);
} else
builder.$callback(err, rows);
});
}
function remove(client, cmd) {
var builder = cmd.builder;
var opt = builder.options;
var params = [];
var q = 'WITH rows AS (DELETE FROM ' + opt.table + WHERE(builder, true, null, params) + ' RETURNING 1) SELECT count(1)::int as dbmsvalue FROM rows';
builder.db.$debug && builder.db.$debug(q);
F.$events.dbms && EMIT('dbms', 'delete', opt.table, opt.db, builder);
if (CANSTATS)
F.stats.performance.dbwm++;
client.query(q, params, function(err, response) {
// Transaction is aborted
if (err && client.$dbmstransaction) {
client.$dbmstransaction = true;
abortcommands(client, builder);
}
builder.db.busy = false;
err && client.$opt.onerror && client.$opt.onerror(err, q, builder);
var rows = response ? response.rows || EMPTYARRAY : EMPTYARRAY;
rows = rows.length ? rows[0].dbmsvalue : 0;
builder.$callback(err, rows);
});
}
function destroy(conn) {
var client = conn.client;
if (client) {
if (client.$dbmstransaction)
client.$dbmstransaction = false;
if (client.release)
client.release();
else
client.end();
}
}
function clientcommand(cmd, client, self) {
switch (cmd.type) {
case 'transaction':
client.$dbmstransaction = true;
command(client, 'BEGIN', cmd);
break;
case 'end':
cmd.type = self.$eb ? self.$errors.items.length ? 'ROLLBACK' : self.$errors.length ? 'ROLLBACK' : 'COMMIT' : 'COMMIT';
command(client, cmd.type, cmd);
break;
case 'commit':
case 'rollback':
client.$dbmstransaction = false;
command(client, cmd.type.toUpperCase(), cmd);
break;
case 'find':
case 'read':
select(client, cmd);
break;
case 'diff':
var cb = cmd.builder.$callback;
cmd.builder.$callback = function(err, response) {
cb.call(cmd.builder, err, err ? EMPTYOBJECT : DIFFARR(cmd.key, response, cmd.form));
};
select(client, cmd);
break;
case 'modify2':
var cb = cmd.builder.$callback;
cmd.builder.$callback = function(err, response) {
cmd.builder.options.fields = null;
if (err) {
cb.call(cmd.builder, err, 0);
} else if (response) {
cmd.builder.db.busy = true;
var mod = cmd.fn(response, cmd.builder.db.$output, cmd.builder.db.$outputall);
cmd.builder.db.busy = false;
if (mod) {
cmd.builder.value = mod;
cmd.builder.$callback = cb;
if (cmd.builder.value.$clean)
cmd.builder.value = cmd.builder.value.$clean();
modify(client, cmd);
} else
cb.call(cmd.builder, err, 0);
} else {
if (cmd.insert) {
cmd.builder.db.busy = true;
mod = cmd.fn(null, cmd.builder.db.$output, cmd.builder.db.$outputall);
cmd.builder.db.busy = false;
if (mod) {
cmd.builder.value = mod;
cmd.builder.$callback = cb;
insert(client, cmd);
} else
cb.call(cmd.builder, err, 0);
} else {
cb.call(cmd.builder, err, 0);
}
}
};
select(client, cmd);
break;
case 'check':
check(client, cmd);
break;
case 'list':
list(client, cmd);
break;
case 'scalar':
scalar(client, cmd);
break;
case 'insert':
if (cmd.unique)
insertexists(client, cmd);
else
insert(client, cmd);
break;
case 'update':
case 'modify':
modify(client, cmd);
break;
case 'remove':
remove(client, cmd);
break;
case 'query':
query(client, cmd);
break;
default:
cmd.builder.$callback(new Error('Operation "' + cmd.type + '" not found'));
break;
}
}
exports.run = function(opt, self, cmd, repeated) {
var conn = self.$conn[opt.id];
if (!conn) {
conn = self.$conn[opt.id] = { driver: opt.options.pooling ? createpool(opt) : createclient(opt) };
conn.$$destroy = destroy;
}
self.$op = null;
self.busy = true;
if (conn.client) {
clientcommand(cmd, conn.client, self);
return;
}
conn.driver.connect(function(err, client) {
if (err) {
self.busy = false;
opt.onerror && opt.onerror(err);
if ((!repeated || repeated < 3) && err.toString().indexOf('many clients') !== -1) {
// try again
setTimeout(function() {
exports.run(opt, self, cmd, (repeated || 0) + 1);
}, 200);
return;
}
if (cmd.builder)
cmd.builder.$callback(err);
else
cmd.db.$next(err);
} else {
conn.client = client;
client.$opt = opt;
client.$dbms = self;
clientcommand(cmd, conn.client, self);
}
});
};
exports.blob_remove = function(opt, id, callback) {
if (typeof(id) === 'string')
id = +id;
createpool(opt).connect(function(err, client, done) {
if (err) {
done && done();
callback && callback(err);
} else {
client.query('DELETE FROM pg_largeobject WHERE loid=' + id, function(err) {
done();
callback && callback(err);
});
}
});
};
exports.blob_read = function(opt, id, callback) {
if (typeof(id) === 'string')
id = +id;
createpool(opt).connect(function(err, client, done) {
if (err)
return callback(err);
if (CANSTATS)
F.stats.performance.dbrm++;
client.query('BEGIN', function(err) {
if (err) {
done();
return callback(err);
}
if (CANSTATS)
F.stats.performance.dbrm++;
Lo.create(client).readStream(id, opt.buffersize || 16384, function(err, size, stream) {
if (err) {
client.query('COMMIT', done);
callback(err);
} else {
var cb = () => client.query('COMMIT', done);
stream.on('error', cb);
stream.on('end', cb);
callback(null, stream, { size: parseInt(size) });
}
});
});
});
};
exports.blob_write = function(opt, stream, name, callback) {
if (typeof(name) === 'function') {
callback = name;
name = undefined;
}
createpool(opt).connect(function(err, client, done) {
if (err)
return callback(err);
if (CANSTATS)
F.stats.performance.dbrm++;
client.query('BEGIN', function(err) {
if (err) {
done();
return callback(err);
}
if (CANSTATS)
F.stats.performance.dbwm++;
Lo.create(client).writeStream(opt.buffersize || 16384, function(err, oid, writer) {
if (err) {
client.query('ROLLBACK', done);
return callback(err);
}
writer.on('finish', function() {
client.query('COMMIT', done);
callback(null, oid.toString());
});
stream.pipe(writer);
});
});
});
};
function prepare_owner(cmd, condition) {
var tmp = [];
if (cmd.member) {
for (var i = 0; i < cmd.member.length; i++)
tmp.push(ESCAPE(cmd.member[i]));
}
var addcondition = [];
if (cmd.condition) {
addcondition.push('');
if (typeof(cmd.condition) === 'string') {
addcondition.push(val);
} else {
for (var key in cmd.condition) {
var val = cmd.condition[key];
addcondition.push(key + (val == null ? ' IS ' : '=') + ESCAPE(val));
}
}
}
// e.g. userid=ID OR (userid IN (ARR) (AND condition))
condition.push('(' + cmd.name + '=' + ESCAPE(cmd.value) + (tmp.length ? (' OR (' + cmd.name + ' IN (' + tmp.join(',') + ')' + (addcondition.length ? addcondition.join(' AND ') : '') + ')') : '') + ')');
}
function WHERE(builder, scalar, group, params) {
var condition = [];
var sort = [];
var tmp;
var op = 'AND';
var opuse = false;
var index = -1;
var current; // temporary for "query" + "cmd.value" and "replace" method because of performance
var replace = builder.options.params ? function(text) {
var indexer = (+text.substring(1)) - 1;
index = params.push(current[indexer]);
return '$' + index;
} : null;
for (var i = 0; i < builder.$commands.length; i++) {
var cmd = builder.$commands[i];
if (builder.options.islanguage && cmd.name && cmd.name[cmd.name.length - 1] === '§')
cmd.name = cmd.name.substring(0, cmd.name.length - 1) + (builder.options.language || '');
switch (cmd.type) {
case 'where':
if (cmd.value === undefined) {
opuse && condition.length && condition.push(op);
condition.push(cmd.name);
} else {
tmp = ESCAPE(cmd.value);
opuse && condition.length && condition.push(op);
condition.push(cmd.name + ((cmd.value == null || tmp == 'null') && cmd.compare === '=' ? ' IS ' : cmd.compare) + tmp);
}
break;
case 'owner':
opuse && condition.length && condition.push(op);
prepare_owner(cmd, condition);
break;
case 'custom':
cmd.fn.call(builder, builder, builder.db.$output, builder.db.$lastoutput);
break;
case 'in':
if (typeof(cmd.value) === 'function')
cmd.value = cmd.value();
if (cmd.value instanceof Array) {
tmp = [];
for (var j = 0; j < cmd.value.length; j++) {
var val = cmd.value[j];
if (val && cmd.field)
val = val[cmd.field];
tmp.push(ESCAPE(val));
}
opuse && condition.length && condition.push(op);
condition.push(cmd.name + ' IN (' + (tmp.length ? tmp.join(',') : 'NULL') + ')');
} else {
opuse && condition.length && condition.push(op);
condition.push(cmd.name + '=' + ESCAPE(cmd.field ? cmd.value[cmd.field] : cmd.value));
}
break;
case 'notin':
if (typeof(cmd.value) === 'function')
cmd.value = cmd.value();
if (cmd.value instanceof Array) {
tmp = [];
for (var j = 0; j < cmd.value.length; j++) {
var val = cmd.value[j];
if (val && cmd.field)
val = val[cmd.field];
tmp.push(ESCAPE(val));
}
opuse && condition.length && condition.push(op);
condition.push(cmd.name + ' NOT IN (' + (tmp.length ? tmp.join(',') : 'NULL') + ')');
} else {
opuse && condition.length && condition.push(op);
condition.push(cmd.name + '<>' + ESCAPE(cmd.field ? cmd.value[cmd.field] : cmd.value));
}
break;
case 'between':
opuse && condition.length && condition.push(op);
condition.push('(' + cmd.name + '>=' + ESCAPE(cmd.a) + ' AND ' + cmd.name + '<=' + ESCAPE(cmd.b) + ')');
break;
case 'search':
tmp = ESCAPE((!cmd.compare || cmd.compare === '*' ? ('%' + cmd.value + '%') : (cmd.compare === 'beg' ? ('%' + cmd.value) : (cmd.value + '%'))));
opuse && condition.length && condition.push(op);
condition.push(cmd.name + ' ILIKE ' + tmp);
break;
case 'searchfull':
tmp = ESCAPE('%' + cmd.value.toLowerCase().replace(/y/g, 'i') + '%');
opuse && condition.length && condition.push(op);
condition.push('REPLACE(LOWER(to_tsvector(' + builder.options.table + '::text)::text), \'y\', \'i\') ILIKE ' + tmp);
break;
case 'searchall':
tmp = '';
for (var j = 0; j < cmd.value.length; j++)
tmp += (tmp ? ' AND ' : '') + cmd.name + ' ILIKE ' + ESCAPE('%' + cmd.value[j] + '%');
opuse && condition.length && condition.push(op);
condition.push('(' + (tmp || '0=1') + ')');
break;
case 'fulltext':
tmp = ESCAPE('%' + cmd.value.toLowerCase() + '%');
opuse && condition.length && condition.push(op);
condition.push('LOWER(' + cmd.name + ') ILIKE ' + tmp);
break;
case 'contains':
opuse && condition.length && condition.push(op);
condition.push('LENGTH(' + cmd.name +'::text)>0');
break;
case 'query':
opuse && condition.length && condition.push(op);
if (cmd.value)
current = cmd.value;
condition.push('(' + (current == undefined ? cmd.query : cmd.query.replace(REG_PARAMS, replace)) + ')');
break;
case 'permit':
opuse && condition.length && condition.push(op);
if (cmd.must)
condition.push('(' + ((cmd.useridfield ? ('"' + cmd.useridfield + '"=' + pg_escape(cmd.userid) + ' OR ') : '') + '"' + cmd.name + '" && $' + params.push([cmd.value])) + ')');
else
condition.push('(' + ((cmd.useridfield ? ('"' + cmd.useridfield + '"=' + pg_escape(cmd.userid) + ' OR ') : '') + 'array_length("' + cmd.name + '",1) IS NULL OR "' + cmd.name + '" && $' + params.push([cmd.value])) + ')');
break;
case 'empty':
opuse && condition.length && condition.push(op);
condition.push('(' + cmd.name + ' IS NULL OR LENGTH(' + cmd.name + '::text)=0)');
break;
case 'month':
case 'year':
case 'day':
case 'hour':
case 'minute':
opuse && condition.length && condition.push(op);
condition.push('EXTRACT(' + cmd.type + ' from ' + cmd.name + ')' + cmd.compare + ESCAPE(cmd.value));
break;
case 'date':
opuse && condition.length && condition.push(op);
condition.push(cmd.name + '::date' + cmd.compare + (cmd.value instanceof Date ? ('\'' + cmd.value.format('yyyy-MM-dd') + '\'::date') : 'null'));
break;
case 'or':
opuse && condition.length && condition.push(op);
op = 'OR';
opuse = false;
condition.push('(');
continue;
case 'end':
condition.push(')');
op = 'AND';
break;
case 'and':
opuse && condition.length && condition.push(op);
op = 'AND';
break;
case 'sort':
sort.push(cmd.name + ' ' + (cmd.desc ? 'DESC' : 'ASC'));
break;
case 'regexp':
tmp = cmd.value.toString().substring(1);
var g = '~';
if (tmp[tmp.length - 1] === 'i') {
tmp = tmp.substring(0, tmp.length - 2);
g = '~*';
} else
tmp = tmp.substring(0, tmp.length - 1);
opuse && condition.length && condition.push(op);
condition.push(cmd.name + g + '\'' + tmp + '\'');
break;
}
opuse = true;
}
var query = (condition.length ? (' WHERE ' + condition.join(' ')) : '') + (group ? (' GROUP BY ' + group) : '');
if (scalar) {
builder.options.sort = sort;
} else {
if (sort.length)
query += ' ORDER BY ' + sort.join(',');
if (builder.options.skip && builder.options.take)
query += ' LIMIT ' + builder.options.take + ' OFFSET ' + builder.options.skip;
else if (builder.options.take)
query += ' LIMIT ' + builder.options.take;
else if (builder.options.skip)
query += ' OFFSET ' + builder.options.skip;
}
return query;