create core module

1 files changed, 106 insertions, 0 deletions

diff --git a/core/src/main/java/org/elasticsearch/index/query/IdsQueryBuilder.java b/core/src/main/java/org/elasticsearch/index/query/IdsQueryBuilder.java
new file mode 100644
index 0000000000..db343bf355
--- /dev/null
+++ b/core/src/main/java/org/elasticsearch/index/query/IdsQueryBuilder.java
@@ -0,0 +1,106 @@
+/*
+ * Licensed to Elasticsearch under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch 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.elasticsearch.index.query;
+
+import org.elasticsearch.common.xcontent.XContentBuilder;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+/**
+ * A query that will return only documents matching specific ids (and a type).
+ */
+public class IdsQueryBuilder extends QueryBuilder implements BoostableQueryBuilder<IdsQueryBuilder> {
+
+    private final List<String> types;
+
+    private List<String> values = new ArrayList<>();
+
+    private float boost = -1;
+
+    private String queryName;
+
+    public IdsQueryBuilder(String... types) {
+        this.types = types == null ? null : Arrays.asList(types);
+    }
+
+    /**
+     * Adds ids to the filter.
+     */
+    public IdsQueryBuilder addIds(String... ids) {
+        values.addAll(Arrays.asList(ids));
+        return this;
+    }
+
+    /**
+     * Adds ids to the filter.
+     */
+    public IdsQueryBuilder ids(String... ids) {
+        return addIds(ids);
+    }
+
+    /**
+     * Sets the boost for this query.  Documents matching this query will (in addition to the normal
+     * weightings) have their score multiplied by the boost provided.
+     */
+    @Override
+    public IdsQueryBuilder boost(float boost) {
+        this.boost = boost;
+        return this;
+    }
+
+    /**
+     * Sets the query name for the filter that can be used when searching for matched_filters per hit.
+     */
+    public IdsQueryBuilder queryName(String queryName) {
+        this.queryName = queryName;
+        return this;
+    }
+
+    @Override
+    protected void doXContent(XContentBuilder builder, Params params) throws IOException {
+        builder.startObject(IdsQueryParser.NAME);
+        if (types != null) {
+            if (types.size() == 1) {
+                builder.field("type", types.get(0));
+            } else {
+                builder.startArray("types");
+                for (Object type : types) {
+                    builder.value(type);
+                }
+                builder.endArray();
+            }
+        }
+        builder.startArray("values");
+        for (Object value : values) {
+            builder.value(value);
+        }
+        builder.endArray();
+        if (boost != -1) {
+            builder.field("boost", boost);
+        }
+        if (queryName != null) {
+            builder.field("_name", queryName);
+        }
+        builder.endObject();
+    }
+}
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