| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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.apache.solr.common.params; |
| |
| import org.apache.solr.common.SolrException; |
| |
| import java.util.Iterator; |
| |
| /** |
| * This is a simple wrapper to SolrParams that will throw a 400 |
| * exception if you ask for a parameter that does not exist. Fields |
| * specified with |
| * |
| * In short, any value you for from a <code>RequiredSolrParams</code> |
| * will return a valid non-null value or throw a 400 exception. |
| * (If you pass in <code>null</code> as the default value, you can |
| * get a null return value) |
| * |
| * |
| * @since solr 1.2 |
| */ |
| public class RequiredSolrParams extends SolrParams { |
| protected final SolrParams params; |
| |
| public RequiredSolrParams(SolrParams params) { |
| this.params = params; |
| } |
| |
| /** get the param from params, fail if not found **/ |
| @Override |
| public String get(String param) { |
| String val = params.get(param); |
| if( val == null ) { |
| throw new SolrException( SolrException.ErrorCode.BAD_REQUEST, "Missing required parameter: "+param ); |
| } |
| return val; |
| } |
| |
| @Override |
| public String getFieldParam(final String field, final String param) { |
| final String fpname = fpname(field,param); |
| String val = params.get(fpname); |
| if (null == val) { |
| // don't call this.get, we want a specified exception message |
| val = params.get(param); |
| if (null == val) { |
| throw new SolrException( SolrException.ErrorCode.BAD_REQUEST, |
| "Missing required parameter: "+fpname+ |
| " (or default: "+param+")" ); |
| } |
| } |
| return val; |
| } |
| |
| @Override |
| public String[] getFieldParams(final String field, final String param) { |
| final String fpname = fpname(field,param); |
| String[] val = params.getParams(fpname); |
| if (null == val) { |
| // don't call this.getParams, we want a specified exception message |
| val = params.getParams(param); |
| if (null == val) { |
| throw new SolrException( SolrException.ErrorCode.BAD_REQUEST, |
| "Missing required parameter: "+fpname+ |
| " (or default: "+param+")" ); |
| } |
| } |
| return val; |
| } |
| |
| |
| @Override |
| public String[] getParams(String param) { |
| String[] vals = params.getParams(param); |
| if( vals == null || vals.length == 0 ) { |
| throw new SolrException( SolrException.ErrorCode.BAD_REQUEST, "Missing required parameter: "+param ); |
| } |
| return vals; |
| } |
| |
| /** returns an Iterator over the parameter names */ |
| @Override |
| public Iterator<String> getParameterNamesIterator() { |
| return params.getParameterNamesIterator(); |
| } |
| |
| @Override |
| public String toString() { |
| return "{required("+params+")}"; |
| } |
| |
| //---------------------------------------------------------- |
| // Functions with a default value - pass directly to the |
| // wrapped SolrParams (they won't return null - unless it's the default) |
| //---------------------------------------------------------- |
| |
| @Override |
| public String get(String param, String def) { |
| return params.get(param, def); |
| } |
| |
| @Override |
| public int getInt(String param, int def) { |
| return params.getInt(param, def); |
| } |
| |
| @Override |
| public float getFloat(String param, float def) { |
| return params.getFloat(param, def); |
| } |
| |
| @Override |
| public boolean getBool(String param, boolean def) { |
| return params.getBool(param, def); |
| } |
| |
| @Override |
| public int getFieldInt(String field, String param, int def) { |
| return params.getFieldInt(field, param, def); |
| } |
| |
| @Override |
| public boolean getFieldBool(String field, String param, boolean def) { |
| return params.getFieldBool(field, param, def); |
| } |
| |
| @Override |
| public float getFieldFloat(String field, String param, float def) { |
| return params.getFieldFloat(field, param, def); |
| } |
| |
| @Override |
| public String getFieldParam(String field, String param, String def) { |
| return params.getFieldParam(field, param, def); |
| } |
| |
| public void check(String... params){ |
| for (String param : params) get(param); |
| } |
| } |