Examples with FieldPath org.ojai.FieldPath used on opensource projects

Example 11 with FieldPath

use of org.ojai.FieldPath in project drill by axbaretto.

the class FieldPathHelper method schemaPathToFieldPath.

/**
 * Returns {@link FieldPath} equivalent of the specified {@link SchemaPath}.
 *
 * @param schemaPath {@link SchemaPath} instance that should be converted
 * @return {@link FieldPath} equivalent of the specified {@link SchemaPath}.
 */
public static FieldPath schemaPathToFieldPath(SchemaPath schemaPath) {
    Deque<PathSegment> pathSegments = Queues.newArrayDeque();
    PathSegment pathSegment = schemaPath.getRootSegment();
    while (pathSegment != null) {
        pathSegments.push(pathSegment);
        pathSegment = pathSegment.getChild();
    }
    FieldSegment child = null;
    while (!pathSegments.isEmpty()) {
        pathSegment = pathSegments.pop();
        if (pathSegment.isNamed()) {
            child = new FieldSegment.NameSegment(((PathSegment.NameSegment) pathSegment).getPath(), child, false);
        } else {
            child = new FieldSegment.IndexSegment(String.valueOf(((PathSegment.ArraySegment) pathSegment).getIndex()), child);
        }
    }
    return new FieldPath((FieldSegment.NameSegment) child);
}

Example 12 with FieldPath

use of org.ojai.FieldPath in project drill by apache.

the class TestFieldPathHelper method simeTests.

@Test
public void simeTests() {
    String[] pathStrs = { "a", "a.b", "a.b.c", "a[1].b[2].c", "a[0][1][2][3].b" };
    FieldPath[] fieldPaths = new FieldPath[pathStrs.length];
    SchemaPath[] schemaPaths = new SchemaPath[pathStrs.length];
    // build
    for (int i = 0; i < pathStrs.length; i++) {
        String path = pathStrs[i];
        fieldPaths[i] = FieldPath.parseFrom(path);
        schemaPaths[i] = SchemaPath.parseFromString(path);
    }
    // verify
    for (int i = 0; i < pathStrs.length; i++) {
        FieldPath fp = FieldPathHelper.schemaPath2FieldPath(schemaPaths[i]);
        assertEquals(fieldPaths[i], fp);
        SchemaPath sp = FieldPathHelper.fieldPath2SchemaPath(fieldPaths[i]);
        assertEquals(schemaPaths[i], sp);
    }
}