public static SqlNode[] cloneArray(SqlNode[] nodes) {
SqlNode[] clones = (SqlNode[]) nodes.clone();
for (int i = 0; i < clones.length; i++) {
SqlNode node = clones[i];
if (node != null) {
clones[i] = (SqlNode) node.clone();
}
}
return clones;
}
/**
* Returns whether two nodes are equal (using {@link #equalsDeep(SqlNode,boolean)}) or are both
* null.
*
* @param node1 First expression
* @param node2 Second expression
* @param fail Whether to throw {@link AssertionError} if expressions are not equal
*/
public static boolean equalDeep(SqlNode node1, SqlNode node2, boolean fail) {
if (node1 == null) {
return node2 == null;
} else if (node2 == null) {
return false;
} else {
return node1.equalsDeep(node2, fail);
}
}