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* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.pulsar.client.impl.schema;
import static org.apache.pulsar.shade.com.google.common.base.Preconditions.checkArgument;
import java.util.HashMap;
import java.util.Map;
import org.apache.pulsar.shade.org.apache.commons.lang3.StringUtils;
import org.apache.pulsar.client.api.schema.SchemaDefinition;
import org.apache.pulsar.client.api.schema.SchemaDefinitionBuilder;
import org.apache.pulsar.client.api.schema.SchemaReader;
import org.apache.pulsar.client.api.schema.SchemaWriter;
/**
* Builder to build {@link org.apache.pulsar.client.api.schema.GenericRecord}.
*/
public class SchemaDefinitionBuilderImpl implements SchemaDefinitionBuilder {
public static final String ALWAYS_ALLOW_NULL = "__alwaysAllowNull";
public static final String JSR310_CONVERSION_ENABLED = "__jsr310ConversionEnabled";
/**
* the schema definition class.
*/
private Class clazz;
/**
* the classLoader definition class.
*/
private ClassLoader classLoader;
/**
* The flag of schema type always allow null.
*
* If it's true, will make all of the pojo field generate schema
* define default can be null,false default can't be null, but it's
* false you can define the field by yourself by the annotation@Nullable
*
*/
private boolean alwaysAllowNull = true;
/**
* The flag of use JSR310 conversion or Joda time conversion.
*
* If value is true, use JSR310 conversion in the Avro schema. Otherwise, use Joda time conversion.
*/
private boolean jsr310ConversionEnabled = false;
/**
* The schema info properties.
*/
private Map properties = new HashMap<>();
/**
* The json schema definition.
*/
private String jsonDef;
/**
* The flag of message decode whether by schema version.
*/
private boolean supportSchemaVersioning = false;
private SchemaReader reader;
private SchemaWriter writer;
@Override
public SchemaDefinitionBuilder withAlwaysAllowNull(boolean alwaysAllowNull) {
this.alwaysAllowNull = alwaysAllowNull;
return this;
}
@Override
public SchemaDefinitionBuilder withJSR310ConversionEnabled(boolean jsr310ConversionEnabled) {
this.jsr310ConversionEnabled = jsr310ConversionEnabled;
return this;
}
@Override
public SchemaDefinitionBuilder addProperty(String key, String value) {
this.properties.put(key, value);
return this;
}
@Override
public SchemaDefinitionBuilder withPojo(Class clazz) {
this.clazz = clazz;
return this;
}
@Override
public SchemaDefinitionBuilder withClassLoader(ClassLoader classLoader) {
this.classLoader = classLoader;
return this;
}
@Override
public SchemaDefinitionBuilder withJsonDef(String jsonDef) {
this.jsonDef = jsonDef;
return this;
}
@Override
public SchemaDefinitionBuilder withSupportSchemaVersioning(boolean supportSchemaVersioning) {
this.supportSchemaVersioning = supportSchemaVersioning;
return this;
}
@Override
public SchemaDefinitionBuilder withProperties(Map properties) {
this.properties = properties;
if (properties.containsKey(ALWAYS_ALLOW_NULL)) {
alwaysAllowNull = Boolean.parseBoolean(properties.get(ALWAYS_ALLOW_NULL));
}
if (properties.containsKey(ALWAYS_ALLOW_NULL)) {
jsr310ConversionEnabled = Boolean.parseBoolean(properties.get(JSR310_CONVERSION_ENABLED));
}
return this;
}
@Override
public SchemaDefinitionBuilder withSchemaReader(SchemaReader reader) {
this.reader = reader;
return this;
}
@Override
public SchemaDefinitionBuilder withSchemaWriter(SchemaWriter writer) {
this.writer = writer;
return this;
}
@Override
public SchemaDefinition build() {
checkArgument(StringUtils.isNotBlank(jsonDef) || clazz != null,
"Must specify one of the pojo or jsonDef for the schema definition.");
checkArgument(!(StringUtils.isNotBlank(jsonDef) && clazz != null),
"Not allowed to set pojo and jsonDef both for the schema definition.");
checkArgument((reader != null && writer != null) || (reader == null && writer == null),
"Must specify reader and writer or none of them.");
properties.put(ALWAYS_ALLOW_NULL, String.valueOf(this.alwaysAllowNull));
properties.put(JSR310_CONVERSION_ENABLED, String.valueOf(this.jsr310ConversionEnabled));
return new SchemaDefinitionImpl(clazz, jsonDef, classLoader,
alwaysAllowNull, properties, supportSchemaVersioning, jsr310ConversionEnabled, reader, writer);
}
}
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