DATAMONGO-2504 - Add hashCode and equals to TextCriteria and Term.

Original pull request: #848.

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/query/Term.java

@@ -15,6 +15,7 @@
  */
 package org.springframework.data.mongodb.core.query;
 
+import java.util.Objects;
 import org.springframework.lang.Nullable;
 
 /**
@@ -102,4 +103,19 @@ public class Term {
 	protected String negateRaw(String raw) {
 		return "-" + raw;
 	}
+
+	@Override
+	public boolean equals(Object o) {
+		if (this == o) return true;
+		if (!(o instanceof Term)) return false;
+		Term term = (Term) o;
+		return negated == term.negated &&
+				type == term.type &&
+				Objects.equals(raw, term.raw);
+	}
+
+	@Override
+	public int hashCode() {
+		return Objects.hash(type, raw, negated);
+	}
 }

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/query/TextCriteria.java

@@ -17,6 +17,7 @@ package org.springframework.data.mongodb.core.query;
 
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Objects;
 
 import org.bson.Document;
 import org.springframework.lang.Nullable;
@@ -243,4 +244,21 @@ public class TextCriteria implements CriteriaDefinition {
 
 		return StringUtils.collectionToDelimitedString(result, " ");
 	}
+
+
+	@Override
+	public boolean equals(Object o) {
+		if (this == o) return true;
+		if (!(o instanceof TextCriteria)) return false;
+		TextCriteria that = (TextCriteria) o;
+		return Objects.equals(terms, that.terms) &&
+				Objects.equals(language, that.language) &&
+				Objects.equals(caseSensitive, that.caseSensitive) &&
+				Objects.equals(diacriticSensitive, that.diacriticSensitive);
+	}
+
+	@Override
+	public int hashCode() {
+		return Objects.hash(terms, language, caseSensitive, diacriticSensitive);
+	}
 }

spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/query/TextCriteriaUnitTests.java

@@ -103,6 +103,13 @@ public class TextCriteriaUnitTests {
 				.isEqualTo(new Document("$search", "coffee").append("$diacriticSensitive", true));
 	}
 
+	@Test // DATAMONGO-2504
+	public void twoIdenticalCriteriaShouldBeEqual() {
+		TextCriteria criteriaOne = TextCriteria.forDefaultLanguage().matching("coffee");
+		TextCriteria criteriaTwo = TextCriteria.forDefaultLanguage().matching("coffee");
+		assertThat(criteriaOne).isEqualTo(criteriaTwo);
+	}
+
 	private Document searchObject(String json) {
 		return new Document("$text", Document.parse(json));
 	}