refactor(index): move SolrType to schema package and rename to SolrFi…

…eldType IQSS#5989

Moving: while living inside the search package, the functionality is
much extended to be used for validation and schema definition. The
schema related stuff needs to live on its own.

Renaming: make the class more representative of Solr terminology

src/main/java/edu/harvard/iq/dataverse/search/SolrType.java → src/main/java/edu/harvard/iq/dataverse/search/schema/SolrFieldType.java

@@ -1,4 +1,4 @@
-package edu.harvard.iq.dataverse.search;
+package edu.harvard.iq.dataverse.search.schema;
 
 import java.util.HashMap;
 import java.util.Map;
@@ -12,7 +12,7 @@
  * Down the road, it might be interesting to define and configure some <fieldType> completely
  * via Managed Schema API.
  */
-public enum SolrType {
+public enum SolrFieldType {
  /**
  * @todo: make this configurable from text_en to text_general or
  * non-English languages? We changed it to text_en to improve English
@@ -34,8 +34,9 @@ public enum SolrType {
  // this type marks a field as Solr generated.
  INTERNAL(null, null),
 
- // TODO: textfields do have more than this (analysers, tokenizers, ...).
+ // TODO: Especially textfields do have more than this (analysers, tokenizers, ...).
  // We do not yet depict these in this class and it might be better suited for a class on its own.
+ // https://solr.apache.org/guide/8_8/field-type-definitions-and-properties.html#field-type-definitions-in-schema-xml
  TEXT_EN("text_en", "solr.TextField"),
  TEXT_GENERAL("text_general", "solr.TextField", Map.of(Property.MULTIVALUED, true)),
  TEXT_GENERAL_REV("text_general_rev", "solr.TextField"),
@@ -54,35 +55,39 @@ public enum Property {
 
  private final String typeName;
  private final String typeClass;
+ // TODO: Field types have a few non-boolean properties. We might need to address this later by using a wrapping class
  private final Map<Property,Boolean> properties;
 
- public SolrType getTypeByName(String typeName) {
+ // TODO: Later on, we should be able to save more configuration aspects as Analysers (including Tokenizers, Filters, ...)
+ // and Similarity.
+
+ public SolrFieldType getTypeByName(String typeName) {
  return lookup.get(typeName);
  }
- private final static HashMap<String, SolrType> lookup = new HashMap<>();
+ private final static HashMap<String, SolrFieldType> lookup = new HashMap<>();
  static {
- for (SolrType st : SolrType.values()) {
- lookup.put(st.typeName(), st);
+ for (SolrFieldType st : SolrFieldType.values()) {
+ lookup.put(st.getName(), st);
  }
  }
 
- SolrType(String typeName, String typeClass) {
+ SolrFieldType(String typeName, String typeClass) {
  this.typeName = typeName;
  this.typeClass = typeClass;
  // immutable empty map
  this.properties = Map.of();
  }
 
- SolrType(String typeName, String typeClass, Map<Property,Boolean> properties) {
+ SolrFieldType(String typeName, String typeClass, Map<Property,Boolean> properties) {
  this.typeName = typeName;
  this.typeClass = typeClass;
  this.properties = properties;
  }
 
- public String typeName() {
+ public String getName() {
  return typeName;
  }
- public String typeClass() {
+ public String getTypeClass() {
  return typeClass;
  }
  public boolean hasProperty(Property p) {