Examples of ch.agent.crnickl.api.UpdatableSchema

ch.agent.crnickl.api.UpdatableSchema
An UpdatableSchema is a schema which can be modified. A schema can only be modified if it is not in use or if the modification has no consequence on existing use. For example a series can always be added but can only be deleted if no chronicle using the schema has actually created the series.
Updatable schemas are not only used in client applications like schema editors but also by CrNiCKL internally. Any schema can be defined as an extension to another schema. Schemas are kept in permanent storage without resolving these extensions. Before a schema is made available for use, CrNiCKL resolves the extensions. Extensions are visible to clients only in edit mode.
A hypothetical example will help to illustrate how schemas are constructed. The example uses 3 schemas: a, b, and c. Schema a defines two series, s1 and s2, and one attribute, a1. Schema b extends schema a; it removes series s2, and adds series s3. Schema c extends schema b; it adds attribute a2 and redefines attribute a1 (for example with a different default value). Given this design, a chronicle with effective schema c, will have two series, s1 and s3, and two attributes, a1 and a2. It will not be aware of the existence of schemas a and b. @author Jean-Paul Vetterli @version 1.1.0

    }
  }


  public void test_220_create_schema1_and_schema2() {
    try {
      UpdatableSchema schema1 = db.createSchema("schema1", null);
      schema1.addAttribute(1);
      schema1.setAttributeProperty(1, db.getProperty("prop1", true));
      schema1.setAttributeDefault(1, "t1v1");
      schema1.applyUpdates();
      UpdatableSchema schema2 = db.createSchema("schema2", "schema1");
      schema2.addAttribute(1);
      schema2.setAttributeProperty(1, db.getProperty("prop1", true));
      schema2.setAttributeDefault(1, "t1v2");
      schema2.applyUpdates();
    } catch (Exception e) {
      fail(e.getMessage());
    }
  }

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    }
  }
  
  public void test_230_define_series_in_schema1() {
    try {
      UpdatableSchema schema1 = db.getSchemas("schema1").iterator().next().edit();
      Schema schema2 = db.getSchemas("schema2").iterator().next();
      schema1.addSeries(1);
      schema1.setSeriesName(1, "foo");
      schema1.setSeriesDescription(1, "foo series");
      schema1.setSeriesTimeDomain(1, Workday.DOMAIN);
      schema1.setSeriesType(1, db.getValueType("numeric"));
      schema1.addAttribute(1, 6);
      schema1.setAttributeProperty(1, 6, db.getProperty("prop2", true));
      schema1.setAttributeDefault(1, 6, "t2v2");
      schema1.applyUpdates();
      assertEquals("foo", schema1.getSeriesDefinition(1, true).getName());
      assertEquals("foo series", schema1.getSeriesDefinition(1, true).getDescription());
      assertEquals(null, schema2.getSeriesDefinition(1, false));
    } catch (Exception e) {
      fail(e.getMessage());
    }
  }

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    }
  }
  
  public void test_240_edit_and_add_series_in_schema1() {
    try {
      UpdatableSchema schema1 = db.getSchemas("schema1").iterator().next().edit();
      schema1.setSeriesName(1, "fou");
      schema1.setSeriesDescription(1, "fou series");
      schema1.applyUpdates();
      assertEquals("fou", schema1.getSeriesDefinition(1, true).getName());
      assertEquals("fou series", schema1.getSeriesDefinition(1, true).getDescription());
      schema1.addSeries(3);
      schema1.setSeriesName(3, "foo");
      schema1.setSeriesDescription(3, "fully foo");
      schema1.setSeriesTimeDomain(3, Workday.DOMAIN);
      schema1.setSeriesType(3, db.getValueType("numeric"));
      schema1.applyUpdates();
      assertEquals(Workday.DOMAIN, schema1.getSeriesDefinition(3, true).getTimeDomain());
    } catch (Exception e) {
      fail(e.getMessage());
    }
  }

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    }
  }


  public void test_250_rename_schema1_schema1a() {
    try {
      UpdatableSchema schema1 = db.getSchemas("schema1").iterator().next().edit();
      schema1.setName("schema1a");
      schema1.applyUpdates();
      assertEquals(1, db.getSchemas("schema1a").size());
    } catch (Exception e) {
      fail(e.getMessage());
    }
  }

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    }
  }
  
  public void test_260_create_schema3_for_base_of_schema1a() {
    try {
      UpdatableSchema schema3 = db.createSchema("schema3", null);
      schema3.applyUpdates();
      UpdatableSchema schema1 = db.getSchemas("schema1a").iterator().next().edit();
      schema1.setBase(schema3);
      schema1.applyUpdates();
      assertEquals(schema3, schema1.getBase());
    } catch (Exception e) {
      fail(e.getMessage());
    }
  }

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    }
  }
  
  public void test_270_reset_base_of_schema1a() {
    try {
      UpdatableSchema schema1 = db.getSchemas("schema1a").iterator().next().edit();
      schema1.setBase(null);
      schema1.applyUpdates();
      assertEquals(null, schema1.getBase());
    } catch (Exception e) {
      fail(e.getMessage());
    }
  }

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    }
  }
  
  public void test_280_cannot_set_base_to_schema_in_construction() {
    try {
      UpdatableSchema schema4 = db.createSchema("schema4", null);
      schema4.addAttribute(1);
      schema4.setAttributeProperty(1, db.getProperty("prop1", true));
      schema4.setAttributeDefault(1, "t1v1");
//      schema4.applyUpdates();
      UpdatableSchema schema1 = db.getSchemas("schema1a").iterator().next().edit();
      schema1.setBase(schema4);
      expectException();
    } catch (Exception e) {
      assertException(e, D.D30128);
    }
  }

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      assertException(e, D.D30128);
    }
  }


  public void test_290_create_schema4_based_on_schema1a_and_override_attribute() {
    UpdatableSchema schema1 = null;
    try {
      UpdatableSchema schema4 = db.createSchema("schema4", "schema1a");
      Schema s = schema4.resolve();
      assertEquals("prop1", s.getAttributeDefinition(1, true).getName());
      schema4.addAttribute(1);
      schema4.eraseAttribute(1);
      assertEquals(true, schema4.getAttributeDefinition(1, true).isErasing());
      assertEquals("fou", s.getSeriesDefinition(1, true).getName());
      schema4.setAttributeProperty(1, db.getProperty("prop1", true));
      schema4.setAttributeDefault(1, "t1v1");
      schema4.applyUpdates();
      schema1 = db.getSchemas("schema1a").iterator().next().edit();
      schema1.setBase(schema4);
      schema1.applyUpdates();
      expectException();
    } catch (Exception e) {

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    }
  }
  
  public void test_300_add_series_to_schema4_but_dont_apply() {
    try {
      UpdatableSchema schema4 = db.getUpdatableSchemas("schema4").iterator().next();
      Schema s = schema4.resolve();
      assertEquals("fou", s.getSeriesDefinition(1, true).getName());
      schema4.addSeries(1);
      schema4.eraseSeries(1);
    } catch (Exception e) {
      fail(e.getMessage());
    }
  }

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  }
  
  public void test_310_set_schema2_as_base_of_schema3() {
    // related to test37
    try {
      UpdatableSchema schema2 = db.getUpdatableSchemas("schema2").iterator().next();
      UpdatableSchema schema3 = db.getUpdatableSchemas("schema3").iterator().next();
      schema3.setBase(schema2);
      schema3.applyUpdates();
    } catch (Exception e) {
      fail(e.getMessage());
    }
  }

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