Handle Get and Scan with conjunctions correctly in Consensus Commit (#2786)

Author: brfrn169

core/src/main/java/com/scalar/db/api/ConditionBuilder.java

@@ -135,6 +135,23 @@ public static ConditionalExpression buildConditionalExpression(
     return new ConditionalExpression(column, operator);
   }
 
+  /**
+   * Builds a like expression with the specified column, operator, and escape character.
+   *
+   * <p>This method is primarily for internal use. Breaking changes can and will be introduced to
+   * this method. Users should not depend on it.
+   *
+   * @param column a target text column used to compare
+   * @param operator an operator used to compare the target column. The operator must be either LIKE
+   *     or NOT_LIKE.
+   * @param escape an escape character for the like operator
+   * @return a conditional expression
+   */
+  public static ConditionalExpression buildLikeExpression(
+      TextColumn column, Operator operator, String escape) {
+    return new LikeExpression(column, operator, escape);
+  }
+
   /**
    * Returns a builder object for a condition expression for PutIf/DeleteIf
    *
@@ -352,6 +369,7 @@ public ConditionalExpression isNotEqualToBlob(byte[] value) {
     public ConditionalExpression isNotEqualToBlob(ByteBuffer value) {
       return new ConditionalExpression(columnName, value, Operator.NE);
     }
+
     /**
      * Creates a 'not equal' conditional expression for a DATE value.
      *
@@ -391,6 +409,7 @@ public ConditionalExpression isNotEqualToTimestamp(LocalDateTime value) {
     public ConditionalExpression isNotEqualToTimestampTZ(Instant value) {
       return new ConditionalExpression(TimestampTZColumn.of(columnName, value), Operator.NE);
     }
+
     /**
      * Creates a 'greater than' conditional expression for a BOOLEAN value.
      *
@@ -590,6 +609,7 @@ public ConditionalExpression isGreaterThanOrEqualToBlob(byte[] value) {
     public ConditionalExpression isGreaterThanOrEqualToBlob(ByteBuffer value) {
       return new ConditionalExpression(columnName, value, Operator.GTE);
     }
+
     /**
      * Creates a 'greater than or equal' conditional expression for a DATE value.
      *
@@ -709,6 +729,7 @@ public ConditionalExpression isLessThanBlob(byte[] value) {
     public ConditionalExpression isLessThanBlob(ByteBuffer value) {
       return new ConditionalExpression(columnName, value, Operator.LT);
     }
+
     /**
      * Creates a 'less than' conditional expression for a DATE value.
      *
@@ -748,6 +769,7 @@ public ConditionalExpression isLessThanTimestamp(LocalDateTime value) {
     public ConditionalExpression isLessThanTimestampTZ(Instant value) {
       return new ConditionalExpression(TimestampTZColumn.of(columnName, value), Operator.LT);
     }
+
     /**
      * Creates a 'less than or equal' conditional expression for a BOOLEAN value.
      *
@@ -1029,6 +1051,7 @@ public ConditionalExpression isNotNullText() {
     public ConditionalExpression isNotNullBlob() {
       return new ConditionalExpression(BlobColumn.ofNull(columnName), Operator.IS_NOT_NULL);
     }
+
     /**
      * Creates an 'is not null' conditional expression for a DATE value.
      *

core/src/main/java/com/scalar/db/api/LikeExpression.java

@@ -16,8 +16,9 @@ public class LikeExpression extends ConditionalExpression {
    * Constructs a {@code LikeExpression} with the specified column and operator. For the escape
    * character, the default one ("\", i.e., backslash) is used.
    *
-   * @param column a target column used to compare
-   * @param operator an operator used to compare the target column
+   * @param column a target text column used to compare
+   * @param operator an operator used to compare the target text column. The operator must be either
+   *     LIKE or NOT_LIKE.
    */
   LikeExpression(TextColumn column, Operator operator) {
     this(column, operator, DEFAULT_ESCAPE_CHAR);
@@ -28,8 +29,9 @@ public class LikeExpression extends ConditionalExpression {
    * The escape character must be a string of a single character or an empty string. If an empty
    * string is specified, the escape character is disabled.
    *
-   * @param column a target column used to compare
-   * @param operator an operator used to compare the target column
+   * @param column a target text column used to compare
+   * @param operator an operator used to compare the target text column. The operator must be either
+   *     LIKE or NOT_LIKE.
    * @param escape an escape character for the like operator
    */
   LikeExpression(TextColumn column, Operator operator, String escape) {
@@ -75,6 +77,11 @@ private void check(String pattern, Operator operator, String escape) {
     }
   }
 
+  @Override
+  public TextColumn getColumn() {
+    return (TextColumn) super.getColumn();
+  }
+
   /**
    * Returns the escape character for LIKE operator.
    *