/*
 * Copyright (c) 2022 MarkLogic Corporation
 *
 * 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 com.marklogic.client.impl;

import java.util.ArrayList;
import java.util.List;
import java.util.Locale;
import java.util.TreeMap;

import com.marklogic.client.semantics.RDFTypes;
import com.marklogic.client.semantics.SPARQLBinding;
import com.marklogic.client.semantics.SPARQLBindings;

/**
 * Represents binding names and values to go with a SPARQL Query.
 * For details about semantics in MarkLogic see
 * <a href="https://docs.marklogic.com/guide/semantics">
 *   Semantics Developer's Guide</a>
 */
public class SPARQLBindingsImpl extends TreeMap<String, List<SPARQLBinding>> implements SPARQLBindings {
  @Override
  public SPARQLBindings bind(String name, String value) {
    return bind(name, value, (RDFTypes) null);
  }

  @Override
  public SPARQLBindings bind(String name, String value, RDFTypes type) {
    if ( name == null  ) throw new IllegalArgumentException("name cannot be null");
    if ( value == null ) throw new IllegalArgumentException("value cannot be null");
    add(new SPARQLBindingImpl(name, value, type));
    return this;
  }

  @Override
  public SPARQLBindings bind(String name, String value, Locale languageTag) {
    if ( name == null  ) throw new IllegalArgumentException("name cannot be null");
    if ( value == null ) throw new IllegalArgumentException("value cannot be null");
    add(new SPARQLBindingImpl(name, value, languageTag));
    return this;
  }

  private void add(SPARQLBinding binding) {
    String name = binding.getName();
    List<SPARQLBinding> bindings = this.get(name);
    if ( bindings == null ) bindings = new ArrayList<>();
    bindings.add(binding);
    this.put(name, bindings);
  }
};

