1 files changed, 134 insertions, 0 deletions
diff --git a/config-model/src/main/java/com/yahoo/schema/fieldoperation/IndexOperation.java b/config-model/src/main/java/com/yahoo/schema/fieldoperation/IndexOperation.java
new file mode 100644
index 00000000000..ab5ffa25f33
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+++ b/config-model/src/main/java/com/yahoo/schema/fieldoperation/IndexOperation.java
@@ -0,0 +1,134 @@
+// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+package com.yahoo.schema.fieldoperation;
+
+import com.yahoo.schema.Index;
+import com.yahoo.schema.Index.Type;
+import com.yahoo.schema.document.BooleanIndexDefinition;
+import com.yahoo.schema.document.HnswIndexParams;
+import com.yahoo.schema.document.SDField;
+import com.yahoo.schema.document.Stemming;
+
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Optional;
+import java.util.OptionalDouble;
+import java.util.OptionalInt;
+import java.util.OptionalLong;
+
+/**
+ * @author Einar M R Rosenvinge
+ */
+public class IndexOperation implements FieldOperation {
+
+    private String indexName;
+    private Optional<Boolean> prefix = Optional.empty();
+    private List<String> aliases = new LinkedList<>();
+    private Optional<String> stemming = Optional.empty();
+    private Optional<Type> type = Optional.empty();
+
+    private OptionalInt arity = OptionalInt.empty(); // For predicate data type
+    private OptionalLong lowerBound = OptionalLong.empty();
+    private OptionalLong upperBound = OptionalLong.empty();
+    private OptionalDouble densePostingListThreshold = OptionalDouble.empty();
+    private Optional<Boolean> enableBm25 = Optional.empty();
+
+    private Optional<HnswIndexParams.Builder> hnswIndexParams = Optional.empty();
+
+    public String getIndexName() {
+        return indexName;
+    }
+
+    public void setIndexName(String indexName) {
+        this.indexName = indexName;
+    }
+
+    public boolean getPrefix() {
+        return prefix.get();
+    }
+
+    public void setPrefix(Boolean prefix) {
+        this.prefix = Optional.of(prefix);
+    }
+
+    public void addAlias(String alias) {
+        aliases.add(alias);
+    }
+
+    public String getStemming() {
+        return stemming.get();
+    }
+
+    public void setStemming(String stemming) {
+        this.stemming = Optional.of(stemming);
+    }
+
+    public void apply(SDField field) {
+        Index index = field.getIndex(indexName);
+
+        if (index == null) {
+            index = new Index(indexName);
+            field.addIndex(index);
+        }
+
+        applyToIndex(index);
+    }
+
+    public void applyToIndex(Index index) {
+        if (prefix.isPresent()) {
+            index.setPrefix(prefix.get());
+        }
+        for (String alias : aliases) {
+            index.addAlias(alias);
+        }
+        if (stemming.isPresent()) {
+            index.setStemming(Stemming.get(stemming.get()));
+        }
+        if (type.isPresent()) {
+            index.setType(type.get());
+        }
+        if (arity.isPresent() || lowerBound.isPresent() ||
+                upperBound.isPresent() || densePostingListThreshold.isPresent()) {
+            index.setBooleanIndexDefiniton(
+                    new BooleanIndexDefinition(arity, lowerBound, upperBound, densePostingListThreshold));
+        }
+        if (enableBm25.isPresent()) {
+            index.setInterleavedFeatures(enableBm25.get());
+        }
+        if (hnswIndexParams.isPresent()) {
+            index.setHnswIndexParams(hnswIndexParams.get().build());
+        }
+    }
+
+    public Type getType() {
+        return type.get();
+    }
+
+    public void setType(Type type) {
+        this.type = Optional.of(type);
+    }
+
+    public void setArity(int arity) {
+        this.arity = OptionalInt.of(arity);
+    }
+
+    public void setLowerBound(long value) {
+        this.lowerBound = OptionalLong.of(value);
+    }
+
+    public void setUpperBound(long value) {
+        this.upperBound = OptionalLong.of(value);
+    }
+
+    public void setDensePostingListThreshold(double densePostingListThreshold) {
+        this.densePostingListThreshold = OptionalDouble.of(densePostingListThreshold);
+    }
+
+    public void setEnableBm25(boolean value) {
+        enableBm25 = Optional.of(value);
+    }
+
+    public void setHnswIndexParams(HnswIndexParams.Builder params) {
+        this.hnswIndexParams = Optional.of(params);
+    }
+
+}