Examples of liquibase.change.ChangeMetaData

liquibase.change.ChangeMetaData
Static metadata about a {@code link Change}. This data is kept in a separate class to better separate the information about the change and the fields of the change. It also ensures there will be no conflict between Change fields and metadata, such as "name". ChangeMetaData instances are immutable. @see ChangeParameterMetaData

                    continue;
                }
                if (change.generateStatementsVolatile(database)) {
                    continue;
                }
                ChangeMetaData changeMetaData = ChangeFactory.getInstance().getChangeMetaData(change);


                change.setResourceAccessor(new JUnitResourceAccessor());


                for (String paramName : new TreeSet<String>(changeMetaData.getRequiredParameters(database).keySet())) {
                    ChangeParameterMetaData param = changeMetaData.getParameters().get(paramName);
                    Object paramValue = param.getExampleValue(database);
                    String serializedValue;
                    serializedValue = formatParameter(paramValue);
                    state.addComment("Change Parameter: " + param.getParameterName() + "=" + serializedValue);
                    param.setValue(change, paramValue);
                }


                ValidationErrors errors = change.validate(database);
                assertFalse("Validation errors for " + changeMetaData.getName() + " on " + database.getShortName() + ": " + errors.toString(), errors.hasErrors());


                SqlStatement[] sqlStatements = change.generateStatements(database);
                for (SqlStatement statement : sqlStatements) {
                    Sql[] sql = SqlGeneratorFactory.getInstance().generateSql(statement, database);
                    if (sql == null) {
                        System.out.println("Null sql for " + statement + " on " + database.getShortName());
                    } else {
                        for (Sql line : sql) {
                            String sqlLine = line.toSql();
                            assertFalse("Change "+changeMetaData.getName()+" contains 'null' for "+database.getShortName()+": "+sqlLine, sqlLine.contains(" null "));


                            state.addValue(sqlLine + ";");
                        }
                    }
                }

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                    continue;
                }
                if (change.generateStatementsVolatile(database)) {
                    continue;
                }
                ChangeMetaData changeMetaData = ChangeFactory.getInstance().getChangeMetaData(change);


                change.setResourceAccessor(new JUnitResourceAccessor());


                ArrayList<String> requiredParams = new ArrayList<String>(changeMetaData.getRequiredParameters(database).keySet());
                for (String paramName : requiredParams) {
                    ChangeParameterMetaData param = changeMetaData.getParameters().get(paramName);
                    Object paramValue = param.getExampleValue(database);
                    param.setValue(change, paramValue);
                }


                for (int i = 0; i < requiredParams.size(); i++) {
                    String paramToRemove = requiredParams.get(i);
                    ChangeParameterMetaData paramToRemoveMetadata = changeMetaData.getParameters().get(paramToRemove);
                    Object currentValue = paramToRemoveMetadata.getCurrentValue(change);
                    paramToRemoveMetadata.setValue(change, null);


                    assertTrue("No errors even with "+changeMetaData.getName()+" with a null "+paramToRemove+" on "+database.getShortName(), change.validate(database).hasErrors());
                    paramToRemoveMetadata.setValue(change, currentValue);
                }
            }
        }
    }

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                    continue;
                }
                if (baseChange.generateStatementsVolatile(database)) {
                    continue;
                }
                ChangeMetaData changeMetaData = ChangeFactory.getInstance().getChangeMetaData(baseChange);
                ArrayList<String> optionalParameters = new ArrayList<String>(changeMetaData.getOptionalParameters(database).keySet());
                Collections.sort(optionalParameters);


                List<List<String>> paramLists = powerSet(optionalParameters);
                Collections.sort(paramLists, new Comparator<List<String>>() {
                    @Override
                    public int compare(List<String> o1, List<String> o2) {
                        int comp = Integer.valueOf(o1.size()).compareTo(o2.size());
                        if (comp == 0) {
                            comp =  StringUtils.join(o1,",").compareTo(StringUtils.join(o2, ","));
                        }
                        return comp;
                    }
                });
                for (List<String> permutation : paramLists) {
                    Change change = changeFactory.create(changeName);
                    change.setResourceAccessor(new JUnitResourceAccessor());
//
                    for (String paramName : new TreeSet<String>(changeMetaData.getRequiredParameters(database).keySet())) {
                        ChangeParameterMetaData param = changeMetaData.getParameters().get(paramName);
                        Object paramValue = param.getExampleValue(database);
                        String serializedValue;
                        serializedValue = formatParameter(paramValue);
                        state.addComment("Required Change Parameter: "+ param.getParameterName()+"="+ serializedValue);
                        param.setValue(change, paramValue);
                    }


                    for (String paramName : permutation) {
                        ChangeParameterMetaData param = changeMetaData.getParameters().get(paramName);
                        if (!param.supports(database)) {
                            continue;
                        }
                        Object paramValue = param.getExampleValue(database);
                        String serializedValue;
                        serializedValue = formatParameter(paramValue);
                        state.addComment("Optional Change Parameter: "+ param.getParameterName()+"="+ serializedValue);
                        param.setValue(change, paramValue);


                    }


                    ValidationErrors errors = change.validate(database);
                    assertFalse("Validation errors for " + changeMetaData.getName() + " on "+database.getShortName()+": " +errors.toString(), errors.hasErrors());
//
//                    SqlStatement[] sqlStatements = change.generateStatements(database);
//                    for (SqlStatement statement : sqlStatements) {
//                        Sql[] sql = SqlGeneratorFactory.getInstance().generateSql(statement, database);
//                        if (sql == null) {

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liquibase.verify.change.VerifyChangeClassesTest

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