diff --git a/src/main/java/com/aerospike/jdbc/AerospikeDatabaseMetadata.java b/src/main/java/com/aerospike/jdbc/AerospikeDatabaseMetadata.java
index 2d82063..fc381a8 100644
--- a/src/main/java/com/aerospike/jdbc/AerospikeDatabaseMetadata.java
+++ b/src/main/java/com/aerospike/jdbc/AerospikeDatabaseMetadata.java
@@ -34,6 +34,7 @@
 import static com.aerospike.jdbc.util.Constants.defaultKeyName;
 import static com.aerospike.jdbc.util.Constants.defaultSchemaName;
 import static com.aerospike.jdbc.util.Constants.schemaScanRecords;
+import static com.google.common.base.Strings.isNullOrEmpty;
 import static java.lang.String.format;
 import static java.sql.Connection.TRANSACTION_NONE;
 import static java.sql.JDBCType.OTHER;
@@ -720,8 +721,8 @@ public ResultSet getProcedureColumns(String catalog, String schemaPattern, Strin
 
     @Override
     public ResultSet getTables(String catalog, String schemaPattern, String tableNamePattern, String[] types) {
-        Pattern tableNameRegex = tableNamePattern == null || "".equals(tableNamePattern) ?
-                null : Pattern.compile(tableNamePattern.replace("%", ".*"));
+        Pattern tableNameRegex = isNullOrEmpty(tableNamePattern) ? null
+                : Pattern.compile(tableNamePattern.replace("%", ".*"));
 
         final Iterable<List<?>> tablesData;
         if (catalog == null) {
@@ -771,7 +772,7 @@ public ResultSet getColumns(String catalog, String schemaPattern, String tableNa
                                 String columnNamePattern) throws SQLException {
         logger.info(() -> String.format("AerospikeDatabaseMetadata getColumns; %s, %s, %s, %s", catalog,
                 schemaPattern, tableNamePattern, columnNamePattern));
-        Pattern tableNameRegex = tableNamePattern == null || "".equals(tableNamePattern) ? null
+        Pattern tableNameRegex = isNullOrEmpty(tableNamePattern) ? null
                 : Pattern.compile(tableNamePattern.replace("%", ".*"));
 
         final String namespace = catalog == null ? schemaPattern : catalog;
diff --git a/src/main/java/com/aerospike/jdbc/predicate/OperatorBinary.java b/src/main/java/com/aerospike/jdbc/predicate/OperatorBinary.java
index bb5523b..ca399c6 100644
--- a/src/main/java/com/aerospike/jdbc/predicate/OperatorBinary.java
+++ b/src/main/java/com/aerospike/jdbc/predicate/OperatorBinary.java
@@ -3,7 +3,7 @@
 import com.aerospike.client.exp.Exp;
 import com.google.common.base.Preconditions;
 
-import java.util.function.BiFunction;
+import java.util.function.BinaryOperator;
 
 public enum OperatorBinary implements Operator {
 
@@ -17,9 +17,9 @@ public enum OperatorBinary implements Operator {
     OR(Exp::or),
     AND(Exp::and);
 
-    private final BiFunction<Exp, Exp, Exp> func;
+    private final BinaryOperator<Exp> func;
 
-    OperatorBinary(BiFunction<Exp, Exp, Exp> expFunc) {
+    OperatorBinary(BinaryOperator<Exp> expFunc) {
         this.func = expFunc;
     }
 
diff --git a/src/main/java/com/aerospike/jdbc/predicate/OperatorUnary.java b/src/main/java/com/aerospike/jdbc/predicate/OperatorUnary.java
index dd3163c..9a457fa 100644
--- a/src/main/java/com/aerospike/jdbc/predicate/OperatorUnary.java
+++ b/src/main/java/com/aerospike/jdbc/predicate/OperatorUnary.java
@@ -3,15 +3,15 @@
 import com.aerospike.client.exp.Exp;
 import com.google.common.base.Preconditions;
 
-import java.util.function.Function;
+import java.util.function.UnaryOperator;
 
 public enum OperatorUnary implements Operator {
 
     NOT(Exp::not);
 
-    private final Function<Exp, Exp> func;
+    private final UnaryOperator<Exp> func;
 
-    OperatorUnary(Function<Exp, Exp> expFunc) {
+    OperatorUnary(UnaryOperator<Exp> expFunc) {
         this.func = expFunc;
     }
 
diff --git a/src/main/java/com/aerospike/jdbc/sql/AerospikeRecordResultSet.java b/src/main/java/com/aerospike/jdbc/sql/AerospikeRecordResultSet.java
index 8438676..86101a8 100644
--- a/src/main/java/com/aerospike/jdbc/sql/AerospikeRecordResultSet.java
+++ b/src/main/java/com/aerospike/jdbc/sql/AerospikeRecordResultSet.java
@@ -1,6 +1,7 @@
 package com.aerospike.jdbc.sql;
 
 import com.aerospike.client.Record;
+import com.aerospike.client.Value;
 import com.aerospike.jdbc.async.RecordSet;
 import com.aerospike.jdbc.model.DataColumn;
 
@@ -8,6 +9,7 @@
 import java.sql.Statement;
 import java.util.List;
 import java.util.Objects;
+import java.util.Optional;
 import java.util.logging.Logger;
 
 import static com.aerospike.jdbc.util.Constants.defaultKeyName;
@@ -43,34 +45,33 @@ protected boolean moveToNext() {
     public Object getObject(String columnLabel) {
         logger.fine(() -> "getObject: " + columnLabel);
         if (columnLabel.equals(defaultKeyName)) {
-            return recordSet.getKey().userKey;
+            return getUserKey().map(Value::getObject).orElse(null);
         }
-        return recordSet.getRecord().bins.get(columnLabel);
+        return getBin(columnLabel).orElse(null);
     }
 
     @Override
     public String getString(String columnLabel) {
         logger.fine(() -> "getString: " + columnLabel);
         if (columnLabel.equals(defaultKeyName)) {
-            return recordSet.getKey().userKey.toString();
+            return getUserKey().map(Value::toString).orElse(null);
         }
-        Object bin = recordSet.getRecord().bins.get(columnLabel);
-        return Objects.isNull(bin) ? null : bin.toString();
+        return getBin(columnLabel).map(Objects::toString).orElse(null);
     }
 
     @Override
     public boolean getBoolean(String columnLabel) {
         logger.fine(() -> "getBoolean: " + columnLabel);
         if (columnLabel.equals(defaultKeyName)) {
-            return Boolean.parseBoolean(recordSet.getKey().userKey.toString());
+            return getUserKey().map(Value::toString).map(Boolean::parseBoolean).orElse(false);
         }
-        return Boolean.parseBoolean(recordSet.getRecord().bins.get(columnLabel).toString());
+        return getBin(columnLabel).map(Object::toString).map(Boolean::parseBoolean).orElse(false);
     }
 
     @Override
     public byte getByte(String columnLabel) {
         logger.fine(() -> "getByte: " + columnLabel);
-        return 0;
+        return (byte) getInt(columnLabel);
     }
 
     @Override
@@ -83,18 +84,18 @@ public short getShort(String columnLabel) {
     public int getInt(String columnLabel) {
         logger.fine(() -> "getInt: " + columnLabel);
         if (columnLabel.equals(defaultKeyName)) {
-            return recordSet.getKey().userKey.toInteger();
+            return getUserKey().map(Value::toInteger).orElse(0);
         }
-        return Integer.parseInt(recordSet.getRecord().bins.get(columnLabel).toString());
+        return getBin(columnLabel).map(Object::toString).map(Integer::parseInt).orElse(0);
     }
 
     @Override
     public long getLong(String columnLabel) {
         logger.fine(() -> "getLong: " + columnLabel);
         if (columnLabel.equals(defaultKeyName)) {
-            return recordSet.getKey().userKey.toLong();
+            return getUserKey().map(Value::toLong).orElse(0L);
         }
-        return Long.parseLong(recordSet.getRecord().bins.get(columnLabel).toString());
+        return getBin(columnLabel).map(Object::toString).map(Long::parseLong).orElse(0L);
     }
 
     @Override
@@ -107,9 +108,9 @@ public float getFloat(String columnLabel) {
     public double getDouble(String columnLabel) {
         logger.fine(() -> "getDouble: " + columnLabel);
         if (columnLabel.equals(defaultKeyName)) {
-            return Double.parseDouble(recordSet.getKey().userKey.toString());
+            return getUserKey().map(Value::toString).map(Double::parseDouble).orElse(0.0d);
         }
-        return Double.parseDouble(recordSet.getRecord().bins.get(columnLabel).toString());
+        return getBin(columnLabel).map(Object::toString).map(Double::parseDouble).orElse(0.0d);
     }
 
     @Override
@@ -122,8 +123,16 @@ public BigDecimal getBigDecimal(String columnLabel, int scale) {
     public byte[] getBytes(String columnLabel) {
         logger.fine(() -> "getBytes: " + columnLabel);
         if (columnLabel.equals(defaultKeyName)) {
-            return recordSet.getKey().userKey.toString().getBytes();
+            return getUserKey().map(Value::toString).map(String::getBytes).orElse(null);
         }
-        return (byte[]) recordSet.getRecord().bins.get(columnLabel);
+        return getBin(columnLabel).map(byte[].class::cast).orElse(null);
+    }
+
+    private Optional<Value> getUserKey() {
+        return Optional.ofNullable(recordSet.getKey().userKey);
+    }
+
+    private Optional<Object> getBin(String columnLabel) {
+        return Optional.ofNullable(recordSet.getRecord().bins.get(columnLabel));
     }
 }