use ArrowType for equal

Author: tianchen92

java/vector/src/main/codegen/templates/UnionVector.java

@@ -665,7 +665,7 @@ public boolean equals(int index, ValueVector to, int toIndex) {
       if (to == null) {
         return false;
       }
-      if (this.getMinorType() != to.getMinorType()) {
+      if (!this.getField().getType().equals(to.getField().getType())) {
         return false;
       }
       UnionVector that = (UnionVector) to;

java/vector/src/main/java/org/apache/arrow/vector/BaseFixedWidthVector.java

@@ -870,7 +870,7 @@ public boolean equals(int index, ValueVector to, int toIndex) {
     if (to == null) {
       return false;
     }
-    if (this.getMinorType() != to.getMinorType()) {
+    if (!this.getField().getType().equals(to.getField().getType())) {
       return false;
     }
 

java/vector/src/main/java/org/apache/arrow/vector/BaseVariableWidthVector.java

@@ -1369,7 +1369,7 @@ public boolean equals(int index, ValueVector to, int toIndex) {
     if (to == null) {
       return false;
     }
-    if (this.getMinorType() != to.getMinorType()) {
+    if (!this.getField().getType().equals(to.getField().getType())) {
       return false;
     }
 

java/vector/src/main/java/org/apache/arrow/vector/DecimalVector.java

@@ -22,7 +22,6 @@
 import java.math.BigDecimal;
 
 import org.apache.arrow.memory.BufferAllocator;
-import org.apache.arrow.memory.util.ByteFunctionHelpers;
 import org.apache.arrow.vector.complex.impl.DecimalReaderImpl;
 import org.apache.arrow.vector.complex.reader.FieldReader;
 import org.apache.arrow.vector.holders.DecimalHolder;
@@ -490,37 +489,6 @@ public void setSafe(int index, int isSet, int start, ArrowBuf buffer) {
     set(index, isSet, start, buffer);
   }
 
-  @Override
-  public boolean equals(int index, ValueVector to, int toIndex) {
-    if (to == null) {
-      return false;
-    }
-    if (this.getMinorType() != to.getMinorType()) {
-      return false;
-    }
-
-    DecimalVector that = (DecimalVector) to;
-
-    if (this.scale != that.scale || this.precision != that.precision) {
-      return false;
-    }
-
-    if (this.isSet(index) != that.isSet(toIndex)) {
-      return false;
-    }
-
-    int leftStart = TYPE_WIDTH * index;
-    int leftEnd = TYPE_WIDTH * (index + 1);
-
-    int rightStart = TYPE_WIDTH * toIndex;
-    int rightEnd = TYPE_WIDTH * (toIndex + 1);
-
-    int ret = ByteFunctionHelpers.equal(this.getDataBuffer(), leftStart, leftEnd,
-        that.getDataBuffer(), rightStart, rightEnd);
-    return ret == 1;
-  }
-
-
   /*----------------------------------------------------------------*
    |                                                                |
    |                      vector transfer                           |

java/vector/src/main/java/org/apache/arrow/vector/complex/FixedSizeListVector.java

@@ -520,7 +520,7 @@ public boolean equals(int index, ValueVector to, int toIndex) {
     if (to == null) {
       return false;
     }
-    if (this.getMinorType() != to.getMinorType()) {
+    if (!this.getField().getType().equals(to.getField().getType())) {
       return false;
     }
 

java/vector/src/main/java/org/apache/arrow/vector/complex/ListVector.java

@@ -430,7 +430,7 @@ public boolean equals(int index, ValueVector to, int toIndex) {
     if (to == null) {
       return false;
     }
-    if (this.getMinorType() != to.getMinorType()) {
+    if (!this.getField().getType().equals(to.getField().getType())) {
       return false;
     }
 

java/vector/src/main/java/org/apache/arrow/vector/complex/NonNullableStructVector.java

@@ -303,7 +303,7 @@ public boolean equals(int index, ValueVector to, int toIndex) {
     if (to == null) {
       return false;
     }
-    if (this.getMinorType() != to.getMinorType()) {
+    if (!this.getField().getType().equals(to.getField().getType())) {
       return false;
     }
     NonNullableStructVector that = (NonNullableStructVector) to;