package play.test;
import org.apache.commons.collections.MapUtils;
import org.apache.commons.io.FileUtils;
import org.yaml.snakeyaml.Yaml;
import org.yaml.snakeyaml.constructor.CustomClassLoaderConstructor;
import org.yaml.snakeyaml.introspector.BeanAccess;
import org.yaml.snakeyaml.scanner.ScannerException;
import play.Logger;
import play.Play;
import play.classloading.ApplicationClasses;
import play.data.binding.Binder;
import play.data.binding.ParamNode;
import play.data.binding.RootParamNode;
import play.data.binding.types.DateBinder;
import play.db.DB;
import play.db.DBPlugin;
import play.db.Model;
import play.db.jpa.JPAPlugin;
import play.exceptions.DatabaseException;
import play.exceptions.UnexpectedException;
import play.exceptions.YAMLException;
import play.libs.IO;
import play.templates.TemplateLoader;
import play.vfs.VirtualFile;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.lang.reflect.Field;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.text.SimpleDateFormat;
import java.util.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Fixtures {
static Pattern keyPattern = Pattern.compile("([^(]+)\\(([^)]+)\\)");
// Allows people to clear the cache, so Fixture is not stateful
public static Map<String, Object> idCache = new HashMap<String, Object>();
public static void executeSQL(String sqlScript) {
for(String sql: sqlScript.split(";")) {
if(sql.trim().length() > 0) {
DB.execute(sql);
}
}
}
public static void executeSQL(File sqlScript) {
executeSQL(IO.readContentAsString(sqlScript));
}
/**
* Delete all Model instances for the given types using the underlying persistence mechanisms
* @param types Types to delete
*/
public static void delete(Class<? extends Model>... types) {
idCache.clear();
disableForeignKeyConstraints();
for (Class<? extends Model> type : types) {
try {
Model.Manager.factoryFor(type).deleteAll();
} catch(Exception e) {
Logger.error(e, "While deleting " + type + " instances");
}
}
enableForeignKeyConstraints();
Play.pluginCollection.afterFixtureLoad();
}
/**
* Delete all Model instances for the given types using the underlying persistence mechanisms
* @param types Types to delete
*/
public static void delete(List<Class<? extends Model>> classes) {
@SuppressWarnings("unchecked")
Class<? extends Model>[] types = new Class[classes.size()];
for (int i = 0; i < types.length; i++) {
types[i] = classes.get(i);
}
delete(types);
}
/**
* Delete all Model instances for the all available types using the underlying persistence mechanisms
*/
@SuppressWarnings("unchecked")
public static void deleteAllModels() {
List<Class<? extends Model>> classes = new ArrayList<Class<? extends Model>>();
for (ApplicationClasses.ApplicationClass c : Play.classes.getAssignableClasses(Model.class)) {
classes.add((Class<? extends Model>)c.javaClass);
}
disableForeignKeyConstraints();
Fixtures.delete(classes);
}
/**
* Use deleteDatabase() instead
* @deprecated use {@link deleteDatabase()} instead
*/
@Deprecated
public static void deleteAll() {
deleteDatabase();
}
static String[] dontDeleteTheseTables = new String[] {"play_evolutions"};
/**
* Flush the entire JDBC database
*/
public static void deleteDatabase() {
try {
idCache.clear();
List<String> names = new ArrayList<String>();
ResultSet rs = DB.getConnection().getMetaData().getTables(null, null, null, new String[]{"TABLE"});
while (rs.next()) {
String name = rs.getString("TABLE_NAME");
names.add(name);
}
disableForeignKeyConstraints();
for (String name : names) {
if(Arrays.binarySearch(dontDeleteTheseTables, name) < 0) {
if (Logger.isTraceEnabled()) {
Logger.trace("Dropping content of table %s", name);
}
DB.execute(getDeleteTableStmt(name) + ";");
}
}
enableForeignKeyConstraints();
Play.pluginCollection.afterFixtureLoad();
} catch (Exception e) {
throw new RuntimeException("Cannot delete all table data : " + e.getMessage(), e);
}
}
/**
* @param name
* @deprecated use {@link loadModels(String...)} instead
*/
@Deprecated
public static void load(String name) {
loadModels(name);
}
/**
* Load Model instances from a YAML file and persist them using the underlying persistence mechanism.
* The format of the YAML file is constrained, see the Fixtures manual page
* @param name Name of a YAML file somewhere in the classpath (or conf/)
*/
public static void loadModels(String name) {
VirtualFile yamlFile = null;
try {
for (VirtualFile vf : Play.javaPath) {
yamlFile = vf.child(name);
if (yamlFile != null && yamlFile.exists()) {
break;
}
}
if (yamlFile == null) {
throw new RuntimeException("Cannot load fixture " + name + ", the file was not found");
}
String renderedYaml = TemplateLoader.load(yamlFile).render();
Yaml yaml = new Yaml();
Object o = yaml.load(renderedYaml);
if (o instanceof LinkedHashMap<?, ?>) {
@SuppressWarnings("unchecked") LinkedHashMap<Object, Map<?, ?>> objects = (LinkedHashMap<Object, Map<?, ?>>) o;
for (Object key : objects.keySet()) {
Matcher matcher = keyPattern.matcher(key.toString().trim());
if (matcher.matches()) {
// Type of the object. i.e. models.employee
String type = matcher.group(1);
// Id of the entity i.e. nicolas
String id = matcher.group(2);
if (!type.startsWith("models.")) {
type = "models." + type;
}
// Was the entity already defined?
if (idCache.containsKey(type + "-" + id)) {
throw new RuntimeException("Cannot load fixture " + name + ", duplicate id '" + id + "' for type " + type);
}
// Those are the properties that were parsed from the YML file
final Map<?, ?> entityValues = objects.get(key);
// Prefix is object, why is that?
final Map<String, String[]> fields = serialize(entityValues, "object");
@SuppressWarnings("unchecked")
Class<Model> cType = (Class<Model>)Play.classloader.loadClass(type);
final Map<String, String[]> resolvedFields = resolveDependencies(cType, fields);
RootParamNode rootParamNode = ParamNode.convert(resolvedFields);
// This is kind of hacky. This basically says that if we have an embedded class we should ignore it.
if (Model.class.isAssignableFrom(cType)) {
Model model = (Model) Binder.bind(rootParamNode, "object", cType, cType, null);
for(Field f : model.getClass().getFields()) {
if (f.getType().isAssignableFrom(Map.class)) {
f.set(model, objects.get(key).get(f.getName()));
}
if (f.getType().equals(byte[].class)) {
f.set(model, objects.get(key).get(f.getName()));
}
}
model._save();
Class<?> tType = cType;
while (!tType.equals(Object.class)) {
idCache.put(tType.getName() + "-" + id, Model.Manager.factoryFor(cType).keyValue((Model)model));
tType = tType.getSuperclass();
}
}
else {
idCache.put(cType.getName() + "-" + id, Binder.bind(rootParamNode, "object", cType, cType, null));
}
}
}
}
// Most persistence engine will need to clear their state
Play.pluginCollection.afterFixtureLoad();
} catch (ClassNotFoundException e) {
throw new RuntimeException("Class " + e.getMessage() + " was not found", e);
} catch (ScannerException e) {
throw new YAMLException(e, yamlFile);
} catch (Throwable e) {
e.printStackTrace();
throw new RuntimeException("Cannot load fixture " + name + ": " + e.getMessage(), e);
}
}
/**
* @deprecated use {@link loadModels(String...)} instead
*/
@Deprecated
public static void load(String... names) {
for (String name : names) {
loadModels(name);
}
}
/**
* @see loadModels(String name)
*/
public static void loadModels(String... names) {
for (String name : names) {
loadModels(name);
}
}
/**
* @deprecated use {@link loadModels(String...)} instead
*/
public static void load(List<String> names) {
loadModels(names);
}
/**
* @see loadModels(String name)
*/
public static void loadModels(List<String> names) {
String[] tNames = new String[names.size()];
for (int i = 0; i < tNames.length; i++) {
tNames[i] = names.get(i);
}
load(tNames);
}
/**
* Load and parse a plain YAML file and returns the corresponding Java objects.
* The YAML parser used is SnakeYAML (http://code.google.com/p/snakeyaml/)
* @param name Name of a YAML file somewhere in the classpath (or conf/)me
* @return Java objects
*/
public static Object loadYaml(String name) {
return loadYaml(name, Object.class);
}
/**
* Load and parse a plain YAML file and returns the corresponding Java List.
* The YAML parser used is SnakeYAML (http://code.google.com/p/snakeyaml/)
* @param name Name of a YAML file somewhere in the classpath (or conf/)me
* @return Java List representing the YAML data
*/
public static List<?> loadYamlAsList(String name) {
return (List<?>)loadYaml(name);
}
/**
* Load and parse a plain YAML file and returns the corresponding Java Map.
* The YAML parser used is SnakeYAML (http://code.google.com/p/snakeyaml/)
* @param name Name of a YAML file somewhere in the classpath (or conf/)me
* @return Java Map representing the YAML data
*/
public static Map<?,?> loadYamlAsMap(String name) {
return (Map<?,?>)loadYaml(name);
}
/**
* Load and parse a plain YAML file and returns the corresponding Java Map.
* The YAML parser used is SnakeYAML (http://code.google.com/p/snakeyaml/)
* @param name Name of a YAML file somewhere in the classpath (or conf/)me
* @param clazz the expected class
* @return Object representing the YAML data
*/
@SuppressWarnings("unchecked")
public static <T> T loadYaml(String name, Class<T> clazz) {
Yaml yaml = new Yaml(new CustomClassLoaderConstructor(clazz, Play.classloader));
yaml.setBeanAccess(BeanAccess.FIELD);
return (T)loadYaml(name, yaml);
}
@SuppressWarnings("unchecked")
public static <T> T loadYaml(String name, Yaml yaml) {
VirtualFile yamlFile = null;
try {
for (VirtualFile vf : Play.javaPath) {
yamlFile = vf.child(name);
if (yamlFile != null && yamlFile.exists()) {
break;
}
}
InputStream is = Play.classloader.getResourceAsStream(name);
if (is == null) {
throw new RuntimeException("Cannot load fixture " + name + ", the file was not found");
}
Object o = yaml.load(is);
return (T)o;
} catch (ScannerException e) {
throw new YAMLException(e, yamlFile);
} catch (Throwable e) {
throw new RuntimeException("Cannot load fixture " + name + ": " + e.getMessage(), e);
}
}
/**
* Delete a directory recursively
* @param path relative path of the directory to delete
*/
public static void deleteDirectory(String path) {
try {
FileUtils.deleteDirectory(Play.getFile(path));
} catch (IOException ex) {
throw new UnexpectedException(ex);
}
}
// Private
/**
*
* TODO: reuse beanutils or MapUtils?
*
* @param entityProperties
* @param prefix
* @return an hash with the resolved entity name and the corresponding value
*/
static Map<String, String[]> serialize(Map<?, ?> entityProperties, String prefix) {
if (entityProperties == null) {
return MapUtils.EMPTY_MAP;
}
final Map<String, String[]> serialized = new HashMap<String, String[]>();
for (Object key : entityProperties.keySet()) {
Object value = entityProperties.get(key);
if (value == null) {
continue;
}
if (value instanceof Map<?, ?>) {
serialized.putAll(serialize((Map<?, ?>) value, prefix + "." + key));
} else if (value instanceof Date) {
serialized.put(prefix + "." + key.toString(), new String[]{new SimpleDateFormat(DateBinder.ISO8601).format(((Date) value))});
} else if (Collection.class.isAssignableFrom(value.getClass())) {
Collection<?> l = (Collection<?>) value;
String[] r = new String[l.size()];
int i = 0;
for (Object el : l) {
r[i++] = el.toString();
}
serialized.put(prefix + "." + key.toString(), r);
} else if (value instanceof String && value.toString().matches("<<<\\s*\\{[^}]+}\\s*")) {
Matcher m = Pattern.compile("<<<\\s*\\{([^}]+)}\\s*").matcher(value.toString());
m.find();
String file = m.group(1);
VirtualFile f = Play.getVirtualFile(file);
if (f != null && f.exists()) {
serialized.put(prefix + "." + key.toString(), new String[]{f.contentAsString()});
}
} else {
serialized.put(prefix + "." + key.toString(), new String[]{value.toString()});
}
}
return serialized;
}
@SuppressWarnings("unchecked")
/**
* Resolve dependencies between objects using their keys. For each referenced objects, it sets the foreign key
*/
static Map<String, String[]> resolveDependencies(Class<Model> type, Map<String, String[]> yml) {
// Contains all the fields (object properties) we should look up
final Set<Field> fields = new HashSet<Field>();
final Map<String, String[]> resolvedYml = new HashMap<String, String[]>();
resolvedYml.putAll(yml);
// Look up the super classes
Class<?> clazz = type;
while (!clazz.equals(Object.class)) {
Collections.addAll(fields, clazz.getDeclaredFields());
clazz = clazz.getSuperclass();
}
// Iterate through the Entity property list
// @Embedded are not managed by the JPA plugin
// This is not the nicest way of doing things.
//modelFields = Model.Manager.factoryFor(type).listProperties();
final List<Model.Property> modelFields = new JPAPlugin.JPAModelLoader(type).listProperties();
for (Model.Property field : modelFields) {
// If we have a relation, get the matching object
if (field.isRelation) {
// These are the Ids that were set in the yml file (i.e person(nicolas)-> nicolas is the id)
final String[] ids = resolvedYml.get("object." + field.name);
if (ids != null) {
final String[] resolvedIds = new String[ids.length];
for (int i = 0; i < ids.length; i++) {
final String id = field.relationType.getName() + "-" + ids[i];
if (!idCache.containsKey(id)) {
throw new RuntimeException("No previous reference found for object of type " + field.name + " with key " + ids[i]);
}
// We now get the primary key
resolvedIds[i] = idCache.get(id).toString();
}
// Set the primary keys instead of the object itself.
// Model.Manager.factoryFor((Class<? extends Model>)field.relationType).keyName() returns the primary key label.
if (Model.class.isAssignableFrom(field.relationType )) {
resolvedYml.put("object." + field.name + "." + Model.Manager.factoryFor((Class<? extends Model>)field.relationType).keyName(), resolvedIds);
} else {
// Might be an embedded object
final String id = field.relationType.getName() + "-" + ids[0];
Object o = idCache.get(id);
// This can be a composite key
if (o.getClass().isArray()) {
for (Object a : (Object[])o) {
for (Field f : field.relationType.getDeclaredFields()) {
try {
resolvedYml.put("object." + field.name + "." + f.getName(), new String[] {f.get(a).toString()});
} catch(Exception e) {
// Ignores
}
}
}
} else {
for (Field f : field.relationType.getDeclaredFields()) {
try {
resolvedYml.put("object." + field.name + "." + f.getName(), new String[] {f.get(o).toString()});
} catch(Exception e) {
// Ignores
}
}
}
}
}
resolvedYml.remove("object." + field.name);
}
}
// Returns the map containing the ids to load for this object's relation.
return resolvedYml;
}
private static void disableForeignKeyConstraints() {
if (DBPlugin.url.startsWith("jdbc:oracle:")) {
DB.execute("begin\n"
+ "for i in (select constraint_name, table_name from user_constraints where constraint_type ='R'\n"
+ "and status = 'ENABLED') LOOP\n"
+ "execute immediate 'alter table '||i.table_name||' disable constraint '||i.constraint_name||'';\n"
+ "end loop;\n"
+ "end;"
);
return;
}
if (DBPlugin.url.startsWith("jdbc:hsqldb:")) {
DB.execute("SET REFERENTIAL_INTEGRITY FALSE");
return;
}
if (DBPlugin.url.startsWith("jdbc:h2:")) {
DB.execute("SET REFERENTIAL_INTEGRITY FALSE");
return;
}
if (DBPlugin.url.startsWith("jdbc:mysql:")) {
DB.execute("SET foreign_key_checks = 0;");
return;
}
if (DBPlugin.url.startsWith("jdbc:postgresql:")) {
DB.execute("SET CONSTRAINTS ALL DEFERRED");
return;
}
if (DBPlugin.url.startsWith("jdbc:sqlserver:")) {
Statement exec=null;
try {
List<String> names = new ArrayList<String>();
Connection connection = DB.getConnection();
ResultSet rs = connection.getMetaData().getTables(null, null, null, new String[]{"TABLE"});
while (rs.next()) {
String name = rs.getString("TABLE_NAME");
names.add(name);
}
// Then we disable all foreign keys
exec = connection.createStatement();
for (String tableName:names)
exec.addBatch("ALTER TABLE " + tableName+" NOCHECK CONSTRAINT ALL");
exec.executeBatch();
exec.close();
return;
} catch (SQLException ex) {
throw new DatabaseException("Error while disabling foreign keys", ex);
}
}
// Maybe Log a WARN for unsupported DB ?
Logger.warn("Fixtures : unable to disable constraints, unsupported database : " + DBPlugin.url);
}
private static void enableForeignKeyConstraints() {
if (DBPlugin.url.startsWith("jdbc:oracle:")) {
DB.execute("begin\n"
+ "for i in (select constraint_name, table_name from user_constraints where constraint_type ='R'\n"
+ "and status = 'DISABLED') LOOP\n"
+ "execute immediate 'alter table '||i.table_name||' enable constraint '||i.constraint_name||'';\n"
+ "end loop;\n"
+ "end;"
);
return;
}
if (DBPlugin.url.startsWith("jdbc:hsqldb:")) {
DB.execute("SET REFERENTIAL_INTEGRITY TRUE");
return;
}
if (DBPlugin.url.startsWith("jdbc:h2:")) {
DB.execute("SET REFERENTIAL_INTEGRITY TRUE");
return;
}
if (DBPlugin.url.startsWith("jdbc:mysql:")) {
DB.execute("SET foreign_key_checks = 1;");
return;
}
if (DBPlugin.url.startsWith("jdbc:postgresql:")) {
return;
}
if (DBPlugin.url.startsWith("jdbc:sqlserver:")) {
Connection connect = null;
Statement exec=null;
try {
connect = DB.getConnection();
// We must first drop all foreign keys
ArrayList<String> checkFKCommands=new ArrayList<String>();
exec=connect.createStatement();
ResultSet rs=exec.executeQuery("SELECT 'ALTER TABLE ' + TABLE_SCHEMA + '.[' + TABLE_NAME +'] WITH CHECK CHECK CONSTRAINT [' + CONSTRAINT_NAME + ']' FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS WHERE CONSTRAINT_TYPE = 'FOREIGN KEY'");
while (rs.next())
{
checkFKCommands.add(rs.getString(1));
}
exec.close();
exec=null;
// Now we have the drop commands, let's execute them
exec=connect.createStatement();
for (String sql:checkFKCommands)
exec.addBatch(sql);
exec.executeBatch();
exec.close();
} catch (SQLException ex) {
throw new DatabaseException("Cannot enable foreign keys", ex);
}
return;
}
Logger.warn("Fixtures : unable to enable constraints, unsupported database : " + DBPlugin.url);
}
static String getDeleteTableStmt(String name) {
if (DBPlugin.url.startsWith("jdbc:mysql:") ) {
return "TRUNCATE TABLE " + name;
} else if (DBPlugin.url.startsWith("jdbc:postgresql:")) {
return "TRUNCATE TABLE " + name + " cascade";
} else if (DBPlugin.url.startsWith("jdbc:oracle:")) {
return "TRUNCATE TABLE " + name;
}
return "DELETE FROM " + name;
}
}