org.bonitasoft.engine.persistence.AbstractDBPersistenceService Maven / Gradle / Ivy
/**
* Copyright (C) 2011-2013 BonitaSoft S.A.
* BonitaSoft, 32 rue Gustave Eiffel - 38000 Grenoble
* This library is free software; you can redistribute it and/or modify it under the terms
* of the GNU Lesser General Public License as published by the Free Software Foundation
* version 2.1 of the License.
* This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
* Floor, Boston, MA 02110-1301, USA.
**/
package org.bonitasoft.engine.persistence;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.SortedSet;
import java.util.TreeSet;
import javax.sql.DataSource;
import org.bonitasoft.engine.commons.ClassReflector;
import org.bonitasoft.engine.sequence.SequenceManager;
import org.bonitasoft.engine.services.SPersistenceException;
import org.bonitasoft.engine.services.TenantPersistenceService;
import org.bonitasoft.engine.sessionaccessor.TenantIdNotSetException;
/**
* Common implementation to persistence services relying on a database
*
* @author Elias Ricken de Medeiros
* @author Baptiste Mesta
* @author Celine Souchet
* @author Matthieu Chaffotte
*/
public abstract class AbstractDBPersistenceService implements TenantPersistenceService {
private final List createTablesFiles = new ArrayList();
private final List postCreateStructureFiles = new ArrayList();
private final List preDropStructureFiles = new ArrayList();
private final List dropTablesFiles = new ArrayList();
private final List initTablesFiles = new ArrayList();
private final List cleanTablesFiles = new ArrayList();
private final List deleteObjectsFiles = new ArrayList();
private final Map sqlTransformers = new HashMap();
private final String statementDelimiter;
private final String likeEscapeCharacter;
private final String name;
private final SequenceManager sequenceManager;
protected final DataSource datasource;
public AbstractDBPersistenceService(final String name, final DBConfigurationsProvider dbConfigurationsProvider, final String statementDelimiter,
final String likeEscapeCharacter, final SequenceManager sequenceManager, final DataSource datasource) {
this.name = name;
this.sequenceManager = sequenceManager;
this.datasource = datasource;
initTablesFiles(dbConfigurationsProvider, name);
this.statementDelimiter = statementDelimiter;
this.likeEscapeCharacter = likeEscapeCharacter;
}
@Override
public String getName() {
return name;
}
protected void initTablesFiles(final DBConfigurationsProvider dbConfigurationsProvider, final String persistenceDBConfigFilter) {
if (dbConfigurationsProvider != null) {
for (final DBConfiguration dbConfiguration : dbConfigurationsProvider.getMatchingTenantConfigurations(persistenceDBConfigFilter)) {
if (dbConfiguration.hasCreateTablesFile()) {
createTablesFiles.add(dbConfiguration.getCreateTablesFile());
}
if (dbConfiguration.hasInitTablesFile()) {
initTablesFiles.add(dbConfiguration.getInitTablesFile());
}
if (dbConfiguration.hasCleanTablesFile()) {
cleanTablesFiles.add(dbConfiguration.getCleanTablesFile());
}
if (dbConfiguration.hasDropTablesFile()) {
dropTablesFiles.add(dbConfiguration.getDropTablesFile());
}
if (dbConfiguration.hasDeleteTenantObjectsFile()) {
deleteObjectsFiles.add(dbConfiguration.getDeleteTenantObjectsFile());
}
if (dbConfiguration.hasPostCreateStructureFile()) {
postCreateStructureFiles.add(dbConfiguration.getPostCreateStructureFile());
}
if (dbConfiguration.hasPreDropStructureFile()) {
preDropStructureFiles.add(dbConfiguration.getPreDropStructureFile());
}
if (dbConfiguration.hasSqlTransformers()) {
sqlTransformers.putAll(dbConfiguration.getSqlTransformers());
}
}
}
}
@Override
public void createStructure() throws SPersistenceException, IOException {
for (final String sqlResource : createTablesFiles) {
executeSQL(sqlResource, statementDelimiter, null, true);
}
}
@Override
public void postCreateStructure() throws SPersistenceException, IOException {
for (final String sqlResource : postCreateStructureFiles) {
executeSQL(sqlResource, statementDelimiter, null, true);
}
}
@Override
public void preDropStructure() throws SPersistenceException, IOException {
for (final String sqlResource : preDropStructureFiles) {
executeSQL(sqlResource, statementDelimiter, null, true);
}
}
@Override
public void cleanStructure() throws SPersistenceException, IOException {
for (final String sqlResource : cleanTablesFiles) {
executeSQL(sqlResource, statementDelimiter, null, true);
}
}
@Override
public void deleteStructure() throws SPersistenceException, IOException {
sequenceManager.clear();
for (final String sqlResource : dropTablesFiles) {
executeSQL(sqlResource, statementDelimiter, null, true);
}
}
@Override
public void initializeStructure() throws SPersistenceException, IOException {
initializeStructure(Collections. emptyMap());
}
@Override
public void initializeStructure(final Map replacements) throws SPersistenceException, IOException {
for (final String sqlResource : initTablesFiles) {
executeSQL(sqlResource, statementDelimiter, replacements, false); // Are we obliged to use the Hibernate connection ?
}
}
@Override
public void deleteTenant(final long tenantId) throws SPersistenceException, IOException {
sequenceManager.clear(tenantId);
final Map replacements = Collections.singletonMap("tenantid", String.valueOf(tenantId));
for (final String sqlResource : deleteObjectsFiles) {
executeSQL(sqlResource, statementDelimiter, replacements, true);
}
}
private void executeSQL(final String sqlResource, final String statementDelimiter, final Map replacements,
final boolean useDataSourceConnection) throws SPersistenceException, IOException {
if (replacements != null) {
final HashMap replacementsWithVarDelimiters = new HashMap();
for (final Entry entry : replacements.entrySet()) {
if (entry.getKey().charAt(0) == '$') {
replacementsWithVarDelimiters.put(entry.getKey(), entry.getValue());
} else {
replacementsWithVarDelimiters.put(new StringBuilder("\\$\\{").append(entry.getKey()).append("\\}").toString(), entry.getValue());
}
}
doExecuteSQL(sqlResource, statementDelimiter, replacementsWithVarDelimiters, useDataSourceConnection);
} else {
doExecuteSQL(sqlResource, statementDelimiter, null, useDataSourceConnection);
}
}
protected SQLTransformer getSqlTransformer(final String className) {
return sqlTransformers.get(className);
}
protected List getSqlTransformers() {
return new ArrayList(sqlTransformers.values());
}
protected abstract void doExecuteSQL(final String sqlResource, final String statementDelimiter, final Map replacements,
final boolean useDataSourceConnection) throws SPersistenceException, IOException;
@Override
public long getNumberOfEntities(final Class entityClass, final QueryOptions options, final Map parameters)
throws SBonitaReadException {
return getNumberOfEntities(entityClass, null, options, parameters);
}
@Override
public long getNumberOfEntities(final Class entityClass, final String querySuffix, final QueryOptions options,
final Map parameters) throws SBonitaReadException {
List filters;
if (options == null) {
filters = Collections.emptyList();
} else {
filters = options.getFilters();
}
final String queryName = getQueryName("getNumberOf", querySuffix, entityClass, filters);
final SelectListDescriptor descriptor = new SelectListDescriptor(queryName, parameters, entityClass, Long.class, options);
return selectList(descriptor).get(0);
}
@Override
public List searchEntity(final Class entityClass, final QueryOptions options, final Map parameters)
throws SBonitaSearchException, SBonitaReadException {
return searchEntity(entityClass, null, options, parameters);
}
@Override
public List searchEntity(final Class entityClass, final String querySuffix, final QueryOptions options,
final Map parameters) throws SBonitaSearchException, SBonitaReadException {
final String queryName = getQueryName("search", querySuffix, entityClass, options.getFilters());
final SelectListDescriptor descriptor = new SelectListDescriptor(queryName, parameters, entityClass, options);
return selectList(descriptor);
}
private String getQueryName(final String prefix, final String suffix, final Class entityClass,
final List filters) {
final SortedSet query = new TreeSet();
for (final FilterOption filter : filters) {
// if filter is just an operator, PersistentClass is not defined:
if (filter.getPersistentClass() != null) {
final String name = filter.getPersistentClass().getSimpleName();
query.add(name);
}
}
final String searchOnClassName = entityClass.getSimpleName();
query.remove(searchOnClassName);
final StringBuilder builder = new StringBuilder(prefix);
builder.append(searchOnClassName);
if (query.size() > 0) {
builder.append("with");
}
for (final String entity : query) {
builder.append(entity);
}
if (suffix != null) {
builder.append(suffix);
}
return builder.toString();
}
/**
* @return
* @throws TenantIdNotSetException
*/
protected abstract long getTenantId() throws TenantIdNotSetException;
protected SequenceManager getSequenceManager() throws TenantIdNotSetException {
return sequenceManager;
}
protected void setId(final PersistentObject entity) throws SPersistenceException {
if (entity == null) {
return;
}
// if this entity has no id, set it
Long id = null;
try {
id = entity.getId();
} catch (final Exception e) {
// this is a new object to save
}
if (id == null || id == -1 || id == 0) {
try {
id = getSequenceManager().getNextId(entity.getClass().getName(), getTenantId());
ClassReflector.invokeSetter(entity, "setId", long.class, id);
} catch (final Exception e) {
throw new SPersistenceException("Problem while saving entity: " + entity + " with id: " + id, e);
}
}
}
/**
* Get like clause for given term with escaped sql query wildcards and escape character
*/
protected String getLikeEscapeClause(final String term) {
final StringBuilder builder = new StringBuilder();
builder.append(" LIKE '");
// 1) escape ' character by adding another ' character
// 2) protect escape character if this character is used in data
// 3) escape % character (sql query wildcard) by adding escape character
// 4) escape _ character (sql query wildcard) by adding escape character
builder.append(term.replaceAll("'", "''").replaceAll(likeEscapeCharacter, likeEscapeCharacter + likeEscapeCharacter)
.replaceAll("%", likeEscapeCharacter + "%").replaceAll("_", likeEscapeCharacter + "_"));
builder.append("%' ESCAPE '").append(likeEscapeCharacter).append('\'');
return builder.toString();
}
}
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