How to use

setMatchStatement

method

in

org.springframework.batch.item.data.Neo4jItemReader

reader.setMatchStatement(this.matchStatement);
reader.setOrderByStatement(this.orderByStatement);
reader.setPageSize(this.pageSize);

@SuppressWarnings("serial")
@Test
public void testResultsWithMatchAndWhereWithSession() throws Exception {
  Neo4jItemReader<String> itemReader = buildSessionBasedReader();
  itemReader.setMatchStatement("n -- m");
  itemReader.setWhereStatement("has(n.name)");
  itemReader.setReturnStatement("m");
  itemReader.afterPropertiesSet();
  when(this.sessionFactory.openSession()).thenReturn(this.session);
  when(this.session.query(String.class, "START n=node(*) MATCH n -- m WHERE has(n.name) RETURN m ORDER BY n.age SKIP 0 LIMIT 50", null)).thenReturn(result);
  when(result.iterator()).thenReturn(Arrays.asList("foo", "bar", "baz").iterator());
  assertTrue(itemReader.doPageRead().hasNext());
}

  @SuppressWarnings("serial")
  @Test
  public void testResultsWithMatchAndWhereWithParametersWithSession() throws Exception {
    Neo4jItemReader<String> itemReader = buildSessionBasedReader();
    Map<String, Object> params = new HashMap<>();
    params.put("foo", "bar");
    itemReader.setParameterValues(params);
    itemReader.setMatchStatement("n -- m");
    itemReader.setWhereStatement("has(n.name)");
    itemReader.setReturnStatement("m");
    itemReader.afterPropertiesSet();

    when(this.sessionFactory.openSession()).thenReturn(this.session);
    when(this.session.query(String.class, "START n=node(*) MATCH n -- m WHERE has(n.name) RETURN m ORDER BY n.age SKIP 0 LIMIT 50", params)).thenReturn(result);
    when(result.iterator()).thenReturn(Arrays.asList("foo", "bar", "baz").iterator());

    assertTrue(itemReader.doPageRead().hasNext());
  }
}

reader.setMatchStatement(this.matchStatement);
reader.setOrderByStatement(this.orderByStatement);
reader.setPageSize(this.pageSize);