PostgreSQL prep

Update of vendored SQL libs and refactoring of store provider layer.

domain/store/context.go

@@ -0,0 +1,107 @@
+// Copyright 2016 Documize Inc. <legal@documize.com>. All rights reserved.
+//
+// This software (Documize Community Edition) is licensed under
+// GNU AGPL v3 http://www.gnu.org/licenses/agpl-3.0.en.html
+//
+// You can operate outside the AGPL restrictions by purchasing
+// Documize Enterprise Edition and obtaining a commercial license
+// by contacting <sales@documize.com>.
+//
+// https://documize.com
+
+package store
+
+import (
+	"fmt"
+	"github.com/documize/community/core/env"
+	"github.com/jmoiron/sqlx"
+	"github.com/pkg/errors"
+)
+
+// Context provides common stuff to store providers.
+type Context struct {
+	Runtime *env.Runtime
+}
+
+// Bind selects query parameter placeholder for given database provider.
+//
+// MySQL uses ?, ?, ? (default for all Documize queries)
+// PostgreSQL uses $1, $2, $3
+// MS SQL Server uses @p1, @p2, @p3
+func (c *Context) Bind(sql string) string {
+	// Default to MySQL.
+	bindParam := sqlx.QUESTION
+
+	switch c.Runtime.StoreProvider.Type() {
+	case env.StoreTypePostgreSQL:
+		bindParam = sqlx.DOLLAR
+	}
+
+	return sqlx.Rebind(bindParam, sql)
+}
+
+// Delete record.
+func (c *Context) Delete(tx *sqlx.Tx, table string, id string) (rows int64, err error) {
+	result, err := tx.Exec(c.Bind("DELETE FROM "+table+" WHERE c_refid=?"), id)
+
+	if err != nil {
+		err = errors.Wrap(err, fmt.Sprintf("unable to delete row in table %s", table))
+		return
+	}
+
+	rows, err = result.RowsAffected()
+
+	return
+}
+
+// DeleteConstrained record constrained to Organization using refid.
+func (c *Context) DeleteConstrained(tx *sqlx.Tx, table string, orgID, id string) (rows int64, err error) {
+	result, err := tx.Exec(c.Bind("DELETE FROM "+table+" WHERE c_orgid=? AND c_refid=?"), orgID, id)
+
+	if err != nil {
+		err = errors.Wrap(err, fmt.Sprintf("unable to delete row in table %s", table))
+		return
+	}
+
+	rows, err = result.RowsAffected()
+
+	return
+}
+
+// DeleteConstrainedWithID record constrained to Organization using non refid.
+func (c *Context) DeleteConstrainedWithID(tx *sqlx.Tx, table string, orgID, id string) (rows int64, err error) {
+	result, err := tx.Exec(c.Bind("DELETE FROM "+table+" WHERE c_orgid=? AND id=?"), orgID, id)
+
+	if err != nil {
+		err = errors.Wrap(err, fmt.Sprintf("unable to delete row in table %s", table))
+		return
+	}
+
+	rows, err = result.RowsAffected()
+
+	return
+}
+
+// DeleteWhere free form query.
+func (c *Context) DeleteWhere(tx *sqlx.Tx, statement string) (rows int64, err error) {
+	result, err := tx.Exec(statement)
+
+	if err != nil {
+		err = errors.Wrap(err, fmt.Sprintf("unable to delete rows: %s", statement))
+		return
+	}
+
+	rows, err = result.RowsAffected()
+
+	return
+}
+
+// EmptyJSON returns database specific empty JSON object.
+func (c *Context) EmptyJSON() string {
+	return c.Runtime.StoreProvider.JSONEmpty()
+}
+
+// GetJSONValue returns database specific empty JSON object.
+func (c *Context) GetJSONValue(column, attribute string) string {
+	return c.Runtime.StoreProvider.JSONGetValue(column, attribute)
+}