/
AbstractQueryable.java
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/
AbstractQueryable.java
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/*******************************************************************************
* Cloud Foundry
* Copyright (c) [2009-2016] Pivotal Software, Inc. All Rights Reserved.
*
* This product is licensed to you under the Apache License, Version 2.0 (the "License").
* You may not use this product except in compliance with the License.
*
* This product includes a number of subcomponents with
* separate copyright notices and license terms. Your use of these
* subcomponents is subject to the terms and conditions of the
* subcomponent's license, as noted in the LICENSE file.
*******************************************************************************/
package org.cloudfoundry.identity.uaa.resources.jdbc;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.cloudfoundry.identity.uaa.resources.Queryable;
import org.springframework.dao.DataAccessException;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.RowMapper;
import org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate;
import org.springframework.util.StringUtils;
public abstract class AbstractQueryable<T> implements Queryable<T> {
private NamedParameterJdbcTemplate jdbcTemplate;
private JdbcPagingListFactory pagingListFactory;
protected RowMapper<T> rowMapper;
private final Log logger = LogFactory.getLog(getClass());
private SearchQueryConverter queryConverter = new SimpleSearchQueryConverter();
private int pageSize = 200;
protected AbstractQueryable(JdbcTemplate jdbcTemplate, JdbcPagingListFactory pagingListFactory,
RowMapper<T> rowMapper) {
this.jdbcTemplate = new NamedParameterJdbcTemplate(jdbcTemplate);
this.pagingListFactory = pagingListFactory;
this.rowMapper = rowMapper;
}
public void setQueryConverter(SearchQueryConverter queryConverter) {
this.queryConverter = queryConverter;
}
/**
* The maximum number of items fetched from the database in one hit. If less
* than or equal to zero, then there is no
* limit.
*
* @param pageSize the page size to use for backing queries (default 200)
*/
public void setPageSize(int pageSize) {
this.pageSize = pageSize;
}
public int getPageSize() {
return pageSize;
}
public int delete(String filter) {
SearchQueryConverter.ProcessedFilter where = queryConverter.convert(filter, null, false);
logger.debug("Filtering groups with SQL: " + where);
try {
String completeSql = "DELETE FROM "+getTableName() + " WHERE " + where.getSql();
logger.debug("delete sql: " + completeSql + ", params: " + where.getParams());
return jdbcTemplate.update(completeSql, where.getParams());
} catch (DataAccessException e) {
logger.debug("Filter '" + filter + "' generated invalid SQL", e);
throw new IllegalArgumentException("Invalid delete filter: " + filter);
}
}
@Override
public List<T> query(String filter) {
return query(filter, null, true);
}
@Override
public List<T> query(String filter, String sortBy, boolean ascending) {
validateOrderBy(queryConverter.map(sortBy));
SearchQueryConverter.ProcessedFilter where = queryConverter.convert(filter, sortBy, ascending);
logger.debug("Filtering groups with SQL: " + where);
List<T> result;
try {
String completeSql = getQuerySQL(filter, where);
logger.debug("complete sql: " + completeSql + ", params: " + where.getParams());
if (pageSize > 0 && pageSize < Integer.MAX_VALUE) {
result = pagingListFactory.createJdbcPagingList(completeSql, where.getParams(), rowMapper, pageSize);
}
else {
result = jdbcTemplate.query(completeSql, where.getParams(), rowMapper);
}
return result;
} catch (DataAccessException e) {
logger.debug("Filter '" + filter + "' generated invalid SQL", e);
throw new IllegalArgumentException("Invalid filter: " + filter);
}
}
protected String getQuerySQL(String filter, SearchQueryConverter.ProcessedFilter where) {
if (filter == null || filter.trim().length()==0) {
return getBaseSqlQuery();
}
if (where.hasOrderBy()) {
return getBaseSqlQuery() + " where (" + where.getSql().replace(where.ORDER_BY, ")"+where.ORDER_BY);
} else {
return getBaseSqlQuery() + " where (" + where.getSql() + ")";
}
}
protected abstract String getBaseSqlQuery();
protected abstract String getTableName();
protected abstract void validateOrderBy(String orderBy) throws IllegalArgumentException;
protected void validateOrderBy(String orderBy, String fields) throws IllegalArgumentException {
if (!StringUtils.hasText(orderBy)) {
return;
}
String[] input = StringUtils.commaDelimitedListToStringArray(orderBy);
Set<String> compare = new HashSet<>();
StringUtils.commaDelimitedListToSet(fields)
.stream()
.forEach(p -> compare.add(p.toLowerCase().trim()));
boolean allints = true;
for (String s : input) {
try {
Integer.parseInt(s);
} catch (NumberFormatException e) {
allints = false;
if (!compare.contains(s.toLowerCase().trim())) {
throw new IllegalArgumentException("Invalid sort field:"+s);
}
}
}
if (allints) {
return;
}
}
public SearchQueryConverter getQueryConverter() {
return queryConverter;
}
}