/*
* Copyright 2016 Red Hat, Inc. and/or its affiliates.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.dashbuilder.dataprovider;
import org.dashbuilder.dataset.DataSet;
import org.dashbuilder.dataset.DataSetFactory;
import org.dashbuilder.dataset.DataSetLookup;
import org.dashbuilder.dataset.DataSetMetadata;
import org.dashbuilder.dataset.def.DataSetDef;
/**
* An example of custom data set provider implementation
*/
public class CustomDataSetProvider implements DataSetProvider {
public static final DataSetProviderType TYPE = () -> "CUSTOM";
private static CustomDataSetProvider SINGLETON = null;
public static CustomDataSetProvider get() {
if (SINGLETON == null) {
SINGLETON = new CustomDataSetProvider ();
}
return SINGLETON;
}
@Override
public DataSetProviderType getType() {
return TYPE;
}
@Override
public DataSetMetadata getDataSetMetadata(DataSetDef def) throws Exception {
DataSet dataSet = lookupDataSet(def, null);
if (dataSet == null) {
return null;
}
return dataSet.getMetadata();
}
@Override
public DataSet lookupDataSet(DataSetDef def, DataSetLookup lookup) throws Exception {
return DataSetFactory.newDataSetBuilder()
.label("name")
.row("david")
.row("maciejs")
.buildDataSet();
}
@Override
public boolean isDataSetOutdated(DataSetDef def) {
return false;
}
}