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From kris...@apache.org
Subject [36/42] lucene-solr:jira/solr-8593: SOLR-5260: Faceting on a field in SolrCloud with docValues=true and indexed=false fails
Date Mon, 28 Nov 2016 17:27:05 GMT
SOLR-5260: Faceting on a field in SolrCloud with docValues=true and indexed=false fails


Project: http://git-wip-us.apache.org/repos/asf/lucene-solr/repo
Commit: http://git-wip-us.apache.org/repos/asf/lucene-solr/commit/ca662660
Tree: http://git-wip-us.apache.org/repos/asf/lucene-solr/tree/ca662660
Diff: http://git-wip-us.apache.org/repos/asf/lucene-solr/diff/ca662660

Branch: refs/heads/jira/solr-8593
Commit: ca6626604b968eeb11630b0fdf64178a71f3999b
Parents: 2392106
Author: Erick Erickson <erick@apache.org>
Authored: Sat Nov 26 12:36:57 2016 -0800
Committer: Erick Erickson <erick@apache.org>
Committed: Sat Nov 26 12:36:57 2016 -0800

----------------------------------------------------------------------
 solr/CHANGES.txt                                |   2 +
 .../org/apache/solr/request/NumericFacets.java  |   4 +-
 .../solr/cloud/DocValuesNotIndexedTest.java     | 514 +++++++++++++++++++
 3 files changed, 518 insertions(+), 2 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/lucene-solr/blob/ca662660/solr/CHANGES.txt
----------------------------------------------------------------------
diff --git a/solr/CHANGES.txt b/solr/CHANGES.txt
index 2dfe579..e234322 100644
--- a/solr/CHANGES.txt
+++ b/solr/CHANGES.txt
@@ -212,6 +212,8 @@ Bug Fixes
 
 * SOLR-9512: CloudSolrClient's cluster state cache can break direct updates to leaders (noble)
 
+* SOLR-5260: Facet search on a docvalue field in a multi shard collection (Trym Møller,
Erick Erickson)
+
 Other Changes
 ----------------------
 

http://git-wip-us.apache.org/repos/asf/lucene-solr/blob/ca662660/solr/core/src/java/org/apache/solr/request/NumericFacets.java
----------------------------------------------------------------------
diff --git a/solr/core/src/java/org/apache/solr/request/NumericFacets.java b/solr/core/src/java/org/apache/solr/request/NumericFacets.java
index 2ff2f8c..d292a88 100644
--- a/solr/core/src/java/org/apache/solr/request/NumericFacets.java
+++ b/solr/core/src/java/org/apache/solr/request/NumericFacets.java
@@ -252,8 +252,8 @@ final class NumericFacets {
       }
 
       if (zeros && (limit < 0 || result.size() < limit)) { // need to merge
with the term dict
-        if (!sf.indexed()) {
-          throw new IllegalStateException("Cannot use " + FacetParams.FACET_MINCOUNT + "=0
on field " + sf.getName() + " which is not indexed");
+        if (!sf.indexed() && !sf.hasDocValues()) {
+          throw new IllegalStateException("Cannot use " + FacetParams.FACET_MINCOUNT + "=0
on field " + sf.getName() + " which is neither indexed nor docValues");
         }
         // Add zeros until there are limit results
         final Set<String> alreadySeen = new HashSet<>();

http://git-wip-us.apache.org/repos/asf/lucene-solr/blob/ca662660/solr/core/src/test/org/apache/solr/cloud/DocValuesNotIndexedTest.java
----------------------------------------------------------------------
diff --git a/solr/core/src/test/org/apache/solr/cloud/DocValuesNotIndexedTest.java b/solr/core/src/test/org/apache/solr/cloud/DocValuesNotIndexedTest.java
new file mode 100644
index 0000000..2ff8d23
--- /dev/null
+++ b/solr/core/src/test/org/apache/solr/cloud/DocValuesNotIndexedTest.java
@@ -0,0 +1,514 @@
+/*
+ * 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.cloud;
+
+import java.io.IOException;
+import java.text.SimpleDateFormat;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.LinkedHashMap;
+import java.util.List;
+import java.util.Locale;
+import java.util.Map;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
+import com.carrotsearch.randomizedtesting.rules.SystemPropertiesRestoreRule;
+import org.apache.solr.client.solrj.SolrQuery;
+import org.apache.solr.client.solrj.SolrServerException;
+import org.apache.solr.client.solrj.impl.CloudSolrClient;
+import org.apache.solr.client.solrj.request.CollectionAdminRequest;
+import org.apache.solr.client.solrj.request.UpdateRequest;
+import org.apache.solr.client.solrj.request.schema.FieldTypeDefinition;
+import org.apache.solr.client.solrj.request.schema.SchemaRequest;
+import org.apache.solr.client.solrj.response.FacetField;
+import org.apache.solr.client.solrj.response.Group;
+import org.apache.solr.client.solrj.response.GroupCommand;
+import org.apache.solr.client.solrj.response.GroupResponse;
+import org.apache.solr.client.solrj.response.QueryResponse;
+import org.apache.solr.client.solrj.response.schema.SchemaResponse;
+import org.apache.solr.common.SolrDocumentList;
+import org.apache.solr.common.SolrInputDocument;
+import org.junit.Before;
+import org.junit.BeforeClass;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.rules.RuleChain;
+import org.junit.rules.TestRule;
+
+import static org.apache.solr.client.solrj.request.schema.SchemaRequest.*;
+
+public class DocValuesNotIndexedTest extends SolrCloudTestCase {
+
+  @Rule
+  public TestRule solrTestRules = RuleChain.outerRule(new SystemPropertiesRestoreRule());
+
+  static final String COLLECTION = "dv_coll";
+
+
+  static List<FieldProps> fieldsToTestSingle = null;
+  static List<FieldProps> fieldsToTestMulti = null;
+  static List<FieldProps> fieldsToTestGroupSortFirst = null;
+  static List<FieldProps> fieldsToTestGroupSortLast = null;
+
+  @BeforeClass
+  public static void createCluster() throws Exception {
+    System.setProperty("managed.schema.mutable", "true");
+    configureCluster(2)
+        .addConfig("conf1", TEST_PATH().resolve("configsets").resolve("cloud-managed").resolve("conf"))
+        .configure();
+
+    // Need enough shards that we have some shards that don't have any docs on them.
+    CollectionAdminRequest.createCollection(COLLECTION, "conf1", 4, 1)
+        .setMaxShardsPerNode(2)
+        .process(cluster.getSolrClient());
+
+    fieldsToTestSingle =
+        Collections.unmodifiableList(Stream.of(
+            new FieldProps("intField", "int", 1),
+            new FieldProps("longField", "long", 1),
+            new FieldProps("doubleField", "double", 1),
+            new FieldProps("floatField", "float", 1),
+            new FieldProps("dateField", "date", 1),
+            new FieldProps("stringField", "string", 1),
+            new FieldProps("boolField", "boolean", 1)
+        ).collect(Collectors.toList()));
+
+    fieldsToTestMulti =
+        Collections.unmodifiableList(Stream.of(
+            new FieldProps("intFieldMulti", "int", 5),
+            new FieldProps("longFieldMulti", "long", 5),
+            new FieldProps("doubleFieldMulti", "double", 5),
+            new FieldProps("floatFieldMulti", "float", 5),
+            new FieldProps("dateFieldMulti", "date", 5),
+            new FieldProps("stringFieldMulti", "string", 5),
+            new FieldProps("boolFieldMulti", "boolean", 2)
+        ).collect(Collectors.toList()));
+
+    // Fields to test for grouping and sorting with sortMinssingFirst/Last.
+    fieldsToTestGroupSortFirst =
+        Collections.unmodifiableList(Stream.of(
+            new FieldProps("intGSF", "int"),
+            new FieldProps("longGSF", "long"),
+            new FieldProps("doubleGSF", "double"),
+            new FieldProps("floatGSF", "float"),
+            new FieldProps("dateGSF", "date"),
+            new FieldProps("stringGSF", "string"),
+            new FieldProps("boolGSF", "boolean")
+        ).collect(Collectors.toList()));
+
+    fieldsToTestGroupSortLast =
+        Collections.unmodifiableList(Stream.of(
+            new FieldProps("intGSL", "int"),
+            new FieldProps("longGSL", "long"),
+            new FieldProps("doubleGSL", "double"),
+            new FieldProps("floatGSL", "float"),
+            new FieldProps("dateGSL", "date"),
+            new FieldProps("stringGSL", "string"),
+            new FieldProps("boolGSL", "boolean")
+        ).collect(Collectors.toList()));
+
+    List<Update> updateList = new ArrayList<>(fieldsToTestSingle.size() +
+        fieldsToTestMulti.size() + fieldsToTestGroupSortFirst.size() + fieldsToTestGroupSortLast.size()
+
+        4);
+
+    updateList.add(getType("name", "float", "class", "solr.TrieFloatField", "precisionStep",
"0"));
+
+    updateList.add(getType("name", "double", "class", "solr.TrieDoubleField", "precisionStep",
"0"));
+
+    updateList.add(getType("name", "date", "class", "solr.TrieDateField", "precisionStep",
"0"));
+
+    updateList.add(getType("name", "boolean", "class", "solr.BoolField"));
+
+
+    // Add a field for each of the types we want to the schema.
+
+    defineFields(updateList, fieldsToTestSingle, false);
+    defineFields(updateList, fieldsToTestMulti, true);
+    defineFields(updateList, fieldsToTestGroupSortFirst, false, "sorMissingFirst", "true");
+    defineFields(updateList, fieldsToTestGroupSortLast, false, "sorMissingLast", "true");
+
+
+    MultiUpdate multiUpdateRequest = new MultiUpdate(updateList);
+    SchemaResponse.UpdateResponse multipleUpdatesResponse = multiUpdateRequest.process(cluster.getSolrClient(),
COLLECTION);
+    assertNull("Error adding fields", multipleUpdatesResponse.getResponse().get("errors"));
+
+    cluster.getSolrClient().setDefaultCollection(COLLECTION);
+  }
+
+
+  @Before
+  public void before() throws IOException, SolrServerException {
+    CloudSolrClient client = cluster.getSolrClient();
+    client.deleteByQuery("*:*");
+    client.commit();
+  }
+
+  @Test
+  public void testDistribFaceting() throws IOException, SolrServerException {
+    // For this test, I want to insure that there are shards that do _not_ have a doc with
any of the DV_only 
+    // fields, see SOLR-5260. So I'll add exactly 1 document to a 4 shard collection.
+
+    CloudSolrClient client = cluster.getSolrClient();
+
+    SolrInputDocument doc = new SolrInputDocument();
+    doc.addField("id", "1");
+    for (FieldProps prop : fieldsToTestSingle) {
+      doc.addField(prop.getName(), prop.getValue(true));
+    }
+
+    for (FieldProps prop : fieldsToTestMulti) {
+      for (int idx = 0; idx < 5; ++idx) {
+        doc.addField(prop.getName(), prop.getValue(true));
+      }
+    }
+
+    new UpdateRequest()
+        .add(doc)
+        .commit(client, COLLECTION);
+
+    final SolrQuery solrQuery = new SolrQuery("q", "*:*", "rows", "0");
+    solrQuery.setFacet(true);
+    for (FieldProps prop : fieldsToTestSingle) {
+      solrQuery.addFacetField(prop.getName());
+    }
+
+    for (FieldProps prop : fieldsToTestMulti) {
+      solrQuery.addFacetField(prop.getName());
+    }
+
+    final QueryResponse rsp = client.query(COLLECTION, solrQuery);
+
+    for (FieldProps props : fieldsToTestSingle) {
+      testFacet(props, rsp);
+    }
+
+    for (FieldProps props : fieldsToTestMulti) {
+      testFacet(props, rsp);
+    }
+
+  }
+
+  // We should be able to sort thing with missing first/last and that are _NOT_ present at
all on one server.
+  @Test
+  public void testGroupingSorting() throws IOException, SolrServerException {
+    CloudSolrClient client = cluster.getSolrClient();
+
+    // The point of these is to have at least one shard w/o the value. 
+    // While getting values for each of these fields starts _out_ random, each successive
+    // _value_ increases.
+    List<SolrInputDocument> docs = new ArrayList<>(3);
+    docs.add(makeGSDoc(2, fieldsToTestGroupSortFirst, fieldsToTestGroupSortLast));
+    docs.add(makeGSDoc(1, fieldsToTestGroupSortFirst, fieldsToTestGroupSortLast));
+    docs.add(makeGSDoc(3, fieldsToTestGroupSortFirst, fieldsToTestGroupSortLast));
+    SolrInputDocument doc = new SolrInputDocument();
+    doc.addField("id", 4);
+    docs.add(doc);
+
+    new UpdateRequest()
+        .add(docs)
+        .commit(client, COLLECTION);
+
+    checkSortOrder(client, fieldsToTestGroupSortFirst, "asc", new String[]{"4", "2", "1",
"3"}, new String[]{"4", "2", "3", "1"});
+    checkSortOrder(client, fieldsToTestGroupSortFirst, "desc", new String[]{"3", "1", "2",
"4"}, new String[]{"1", "2", "3", "4"});
+
+    checkSortOrder(client, fieldsToTestGroupSortLast, "asc", new String[]{"4", "2", "1",
"3"}, new String[]{"4", "2", "3", "1"});
+    checkSortOrder(client, fieldsToTestGroupSortLast, "desc", new String[]{"3", "1", "2",
"4"}, new String[]{"1", "2", "3", "4"});
+
+  }
+
+  private void checkSortOrder(CloudSolrClient client, List<FieldProps> props, String
sortDir, String[] order, String[] orderBool) throws IOException, SolrServerException {
+    for (FieldProps prop : props) {
+      final SolrQuery solrQuery = new SolrQuery("q", "*:*", "rows", "100");
+      solrQuery.setSort(prop.getName(), "asc".equals(sortDir) ? SolrQuery.ORDER.asc : SolrQuery.ORDER.desc);
+      solrQuery.addSort("id", SolrQuery.ORDER.asc);
+      final QueryResponse rsp = client.query(COLLECTION, solrQuery);
+      SolrDocumentList res = rsp.getResults();
+      assertEquals("Should have exactly " + order.length + " documents returned", order.length,
res.getNumFound());
+      String expected;
+      for (int idx = 0; idx < res.size(); ++idx) {
+        if (prop.getName().startsWith("bool")) expected = orderBool[idx];
+        else expected = order[idx];
+        assertEquals("Documents in wrong order for field: " + prop.getName(),
+            expected, res.get(idx).get("id"));
+      }
+    }
+  }
+
+  @Test
+  public void testGroupingDocAbsent() throws IOException, SolrServerException {
+    List<SolrInputDocument> docs = new ArrayList<>(3);
+    docs.add(makeGSDoc(2, fieldsToTestGroupSortFirst, null));
+    docs.add(makeGSDoc(1, fieldsToTestGroupSortFirst, null));
+    docs.add(makeGSDoc(3, fieldsToTestGroupSortFirst, null));
+    SolrInputDocument doc = new SolrInputDocument();
+    doc.addField("id", 4);
+    docs.add(doc);
+    CloudSolrClient client = cluster.getSolrClient();
+
+    new UpdateRequest()
+        .add(docs)
+        .commit(client, COLLECTION);
+
+    // when grouping on any of these DV-only (not indexed) fields we expect exactly 4 groups
except for Boolean.
+    for (FieldProps prop : fieldsToTestGroupSortFirst) {
+      // Special handling until SOLR-9802 is fixed
+      if (prop.getName().startsWith("date")) continue;
+      // SOLR-9802 to here
+
+      final SolrQuery solrQuery = new SolrQuery("q", "*:*",
+          "group", "true",
+          "group.field", prop.getName());
+
+      final QueryResponse rsp = client.query(COLLECTION, solrQuery);
+
+      GroupResponse groupResponse = rsp.getGroupResponse();
+      List<GroupCommand> commands = groupResponse.getValues();
+      GroupCommand fieldCommand = commands.get(0);
+      int expected = 4;
+      if (prop.getName().startsWith("bool")) expected = 3; //true, false and null
+
+      List<Group> fieldCommandGroups = fieldCommand.getValues();
+      assertEquals("Did not find the expected number of groups!", expected, fieldCommandGroups.size());
+    }
+  }
+
+  @Test
+  // Verify that we actually form groups that are "expected". Most of the processing takes
some care to 
+  // make sure all the values for each field are unique. We need to have docs that have values
that are _not_
+  // unique.
+  public void testGroupingDVOnly() throws IOException, SolrServerException {
+    List<SolrInputDocument> docs = new ArrayList<>(50);
+    for (int idx = 0; idx < 49; ++idx) {
+      SolrInputDocument doc = new SolrInputDocument();
+      doc.addField("id", idx);
+      boolean doInc = ((idx % 7) == 0);
+      for (FieldProps prop : fieldsToTestGroupSortFirst) {
+        doc.addField(prop.getName(), prop.getValue(doInc));
+      }
+      docs.add(doc);
+      if ((idx % 5) == 0) {
+        doc = new SolrInputDocument();
+        doc.addField("id", idx + 100);
+        docs.add(doc);
+      }
+    }
+
+    CloudSolrClient client = cluster.getSolrClient();
+
+    new UpdateRequest()
+        .add(docs)
+        .commit(client, COLLECTION);
+
+    // OK, we should have one group with 10 entries for null, a group with 1 entry and 7
groups with 7
+    for (FieldProps prop : fieldsToTestGroupSortFirst) {
+      // Special handling until SOLR-9802 is fixed
+      if (prop.getName().startsWith("date")) continue;
+      // SOLR-9802 to here
+
+      final SolrQuery solrQuery = new SolrQuery(
+          "q", "*:*",
+          "rows", "100",
+          "group", "true",
+          "group.field", prop.getName(),
+          "group.limit", "100");
+
+      final QueryResponse rsp = client.query(COLLECTION, solrQuery);
+
+      GroupResponse groupResponse = rsp.getGroupResponse();
+      List<GroupCommand> commands = groupResponse.getValues();
+
+
+      int nullCount = 0;
+      int sevenCount = 0;
+      int boolCount = 0;
+      for (int idx = 0; idx < commands.size(); ++idx) {
+        GroupCommand fieldCommand = commands.get(idx);
+        for (Group grp : fieldCommand.getValues()) {
+          switch (grp.getResult().size()) {
+            case 7:
+              ++sevenCount;
+              assertNotNull("Every group with 7 entries should have a group value.", grp.getGroupValue());
+              break;
+            case 10:
+              ++nullCount;
+              assertNull("This should be the null group", grp.getGroupValue());
+              break;
+            case 25:
+            case 24:
+              ++boolCount;
+              assertEquals("We should have more counts for boolean fields!", "boolGSF", prop.getName());
+              break;
+            
+            default:
+              fail("Unexpected number of elements in the group for " + prop.getName() + ":
" + grp.getResult().size());
+          }
+        }
+      }
+      assertEquals("Should be exactly one group with 1 entry of 10 for null for field " +
prop.getName(), 1, nullCount);
+      if (prop.getName().startsWith("bool")) {
+        assertEquals("Should be exactly 2 groups with non-null Boolean types " + prop.getName(),
2, boolCount);
+        assertEquals("Should be no seven count groups for Boolean types " + prop.getName(),
0, sevenCount);
+      } else {
+        assertEquals("Should be exactly 7 groups with seven entries for field " + prop.getName(),
7, sevenCount);
+        assertEquals("Should be no gropus with 24 or 25 entries for field " + prop.getName(),
0, boolCount);
+      }
+    }
+  }
+
+  private SolrInputDocument makeGSDoc(int id, List<FieldProps> p1, List<FieldProps>
p2, String... args) {
+    SolrInputDocument doc = new SolrInputDocument();
+    doc.addField("id", id);
+    for (FieldProps prop : p1) {
+      doc.addField(prop.getName(), prop.getValue(true));
+    }
+
+    if (p2 != null) {
+      for (FieldProps prop : p2) {
+        doc.addField(prop.getName(), prop.getValue(true));
+      }
+    }
+
+    for (int idx = 0; idx < args.length; idx += 2) {
+      doc.addField(args[idx], args[idx + 1]);
+    }
+    return doc;
+  }
+
+
+  private static void defineFields(List<Update> updateList, List<FieldProps>
props, boolean multi, String... extras) {
+    for (FieldProps prop : props) {
+      Map<String, Object> fieldAttributes = new LinkedHashMap<>();
+      fieldAttributes.put("name", prop.getName());
+      fieldAttributes.put("type", prop.getType());
+      fieldAttributes.put("indexed", "false");
+      fieldAttributes.put("multiValued", multi ? "true" : "false");
+      fieldAttributes.put("docValues", "true");
+      updateList.add(new AddField(fieldAttributes));
+    }
+  }
+
+  private static AddFieldType getType(String... args) {
+
+    FieldTypeDefinition ftd = new FieldTypeDefinition();
+    Map<String, Object> ftas = new LinkedHashMap<>();
+    for (int idx = 0; idx < args.length; idx += 2) {
+      ftas.put(args[idx], args[idx + 1]);
+    }
+    ftd.setAttributes(ftas);
+
+    return new SchemaRequest.AddFieldType(ftd);
+  }
+
+
+  private void testFacet(FieldProps props, QueryResponse rsp) {
+    String name = props.getName();
+    final List<FacetField.Count> counts = rsp.getFacetField(name).getValues();
+    long expectedCount = props.getExpectedCount();
+    long foundCount = getCount(counts);
+    assertEquals("Field " + name + " should have a count of " + expectedCount, expectedCount,
foundCount);
+
+  }
+
+  private long getCount(final List<FacetField.Count> counts) {
+    return counts.stream().mapToLong(FacetField.Count::getCount).sum();
+  }
+}
+
+class FieldProps {
+
+  private final String name;
+  private final String type;
+  private final int expectedCount;
+  private Object base;
+  private int counter = 0;
+
+  static SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'", Locale.ROOT);
+
+  FieldProps(String name, String type, int expectedCount) {
+    this.name = name;
+    this.type = type;
+    this.expectedCount = expectedCount;
+    if (name.startsWith("int")) {
+      base = Math.abs(DocValuesNotIndexedTest.random().nextInt());
+    } else if (name.startsWith("long")) {
+      base = Math.abs(DocValuesNotIndexedTest.random().nextLong());
+    } else if (name.startsWith("float")) {
+      base = Math.abs(DocValuesNotIndexedTest.random().nextFloat());
+    } else if (name.startsWith("double")) {
+      base = Math.abs(DocValuesNotIndexedTest.random().nextDouble());
+    } else if (name.startsWith("date")) {
+      base = Math.abs(DocValuesNotIndexedTest.random().nextLong());
+    } else if ("boolGSF".equals(name) || "boolGSL".equals(name)) {
+      base = false; // Special for sorting
+    } else if (name.startsWith("bool")) {
+      base = DocValuesNotIndexedTest.random().nextBoolean();
+    } else if (name.startsWith("string")) {
+      base = "base_string_" + DocValuesNotIndexedTest.random().nextInt(1_000_000);
+    } else {
+      throw new RuntimeException("Should have found a prefix for the field before now!");
+    }
+  }
+
+  FieldProps(String name, String type) {
+    this(name, type, -1);
+  }
+
+  String getName() {
+    return name;
+  }
+
+  String getType() {
+    return type;
+  }
+
+  int getExpectedCount() {
+    return expectedCount;
+  }
+
+  public String getValue(boolean incrementCounter) {
+    if (incrementCounter) {
+      counter += DocValuesNotIndexedTest.random().nextInt(10) + 100;
+    }
+    if (name.startsWith("int")) {
+      return Integer.toString((int) base + counter);
+    }
+    if (name.startsWith("long")) {
+      return Long.toString((long) base + counter);
+    }
+    if (name.startsWith("float")) {
+      return Float.toString((float) base + counter);
+    }
+    if (name.startsWith("double")) {
+      return Double.toString((double) base + counter);
+    }
+    if (name.startsWith("date")) {
+      return format.format(985_847_645 + (long) base + counter);
+    }
+    if (name.startsWith("bool")) {
+      String ret = Boolean.toString((boolean) base);
+      base = !((boolean) base);
+      return ret;
+    }
+    if (name.startsWith("string")) {
+      return (String) base + counter;
+    }
+    throw new RuntimeException("Should have found a prefix for the field before now!");
+  }
+}
+


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