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Add buffered lookahead for Jackson (opensearch-project#338)
Signed-off-by: luneo7 <luneo7@gmail.com>
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137 changes: 137 additions & 0 deletions
137
java-client/src/main/java/org/opensearch/client/json/DelegatingJsonParser.java
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/* | ||
* SPDX-License-Identifier: Apache-2.0 | ||
* | ||
* The OpenSearch Contributors require contributions made to | ||
* this file be licensed under the Apache-2.0 license or a | ||
* compatible open source license. | ||
*/ | ||
|
||
/* | ||
* Licensed to Elasticsearch B.V. under one or more contributor | ||
* license agreements. See the NOTICE file distributed with | ||
* this work for additional information regarding copyright | ||
* ownership. Elasticsearch B.V. 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. | ||
*/ | ||
|
||
/* | ||
* Modifications Copyright OpenSearch Contributors. See | ||
* GitHub history for details. | ||
*/ | ||
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package org.opensearch.client.json; | ||
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import jakarta.json.JsonArray; | ||
import jakarta.json.JsonObject; | ||
import jakarta.json.JsonValue; | ||
import jakarta.json.stream.JsonLocation; | ||
import jakarta.json.stream.JsonParser; | ||
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import java.math.BigDecimal; | ||
import java.util.Map; | ||
import java.util.stream.Stream; | ||
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public abstract class DelegatingJsonParser implements JsonParser { | ||
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private final JsonParser parser; | ||
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public DelegatingJsonParser(JsonParser parser) { | ||
this.parser = parser; | ||
} | ||
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@Override | ||
public boolean hasNext() { | ||
return parser.hasNext(); | ||
} | ||
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@Override | ||
public Event next() { | ||
return parser.next(); | ||
} | ||
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@Override | ||
public String getString() { | ||
return parser.getString(); | ||
} | ||
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@Override | ||
public boolean isIntegralNumber() { | ||
return parser.isIntegralNumber(); | ||
} | ||
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@Override | ||
public int getInt() { | ||
return parser.getInt(); | ||
} | ||
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@Override | ||
public long getLong() { | ||
return parser.getLong(); | ||
} | ||
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@Override | ||
public BigDecimal getBigDecimal() { | ||
return parser.getBigDecimal(); | ||
} | ||
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@Override | ||
public JsonLocation getLocation() { | ||
return parser.getLocation(); | ||
} | ||
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@Override | ||
public JsonObject getObject() { | ||
return parser.getObject(); | ||
} | ||
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@Override | ||
public JsonValue getValue() { | ||
return parser.getValue(); | ||
} | ||
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@Override | ||
public JsonArray getArray() { | ||
return parser.getArray(); | ||
} | ||
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@Override | ||
public Stream<JsonValue> getArrayStream() { | ||
return parser.getArrayStream(); | ||
} | ||
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@Override | ||
public Stream<Map.Entry<String, JsonValue>> getObjectStream() { | ||
return parser.getObjectStream(); | ||
} | ||
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@Override | ||
public Stream<JsonValue> getValueStream() { | ||
return parser.getValueStream(); | ||
} | ||
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@Override | ||
public void skipArray() { | ||
parser.skipArray(); | ||
} | ||
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@Override | ||
public void skipObject() { | ||
parser.skipObject(); | ||
} | ||
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@Override | ||
public void close() { | ||
parser.close(); | ||
} | ||
} |
68 changes: 68 additions & 0 deletions
68
java-client/src/main/java/org/opensearch/client/json/JsonLocationImpl.java
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@@ -0,0 +1,68 @@ | ||
/* | ||
* SPDX-License-Identifier: Apache-2.0 | ||
* | ||
* The OpenSearch Contributors require contributions made to | ||
* this file be licensed under the Apache-2.0 license or a | ||
* compatible open source license. | ||
*/ | ||
|
||
/* | ||
* Licensed to Elasticsearch B.V. under one or more contributor | ||
* license agreements. See the NOTICE file distributed with | ||
* this work for additional information regarding copyright | ||
* ownership. Elasticsearch B.V. 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. | ||
*/ | ||
|
||
/* | ||
* Modifications Copyright OpenSearch Contributors. See | ||
* GitHub history for details. | ||
*/ | ||
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package org.opensearch.client.json; | ||
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import jakarta.json.stream.JsonLocation; | ||
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class JsonLocationImpl implements JsonLocation { | ||
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private final long columnNo; | ||
private final long lineNo; | ||
private final long offset; | ||
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JsonLocationImpl(long lineNo, long columnNo, long streamOffset) { | ||
this.lineNo = lineNo; | ||
this.columnNo = columnNo; | ||
this.offset = streamOffset; | ||
} | ||
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@Override | ||
public long getLineNumber() { | ||
return lineNo; | ||
} | ||
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@Override | ||
public long getColumnNumber() { | ||
return columnNo; | ||
} | ||
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@Override | ||
public long getStreamOffset() { | ||
return offset; | ||
} | ||
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@Override | ||
public String toString() { | ||
return "(line no=" + lineNo + ", column no=" + columnNo + ", offset=" + offset + ")"; | ||
} | ||
} |
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59 changes: 59 additions & 0 deletions
59
java-client/src/main/java/org/opensearch/client/json/LookAheadJsonParser.java
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,59 @@ | ||
/* | ||
* SPDX-License-Identifier: Apache-2.0 | ||
* | ||
* The OpenSearch Contributors require contributions made to | ||
* this file be licensed under the Apache-2.0 license or a | ||
* compatible open source license. | ||
*/ | ||
|
||
/* | ||
* Licensed to Elasticsearch B.V. under one or more contributor | ||
* license agreements. See the NOTICE file distributed with | ||
* this work for additional information regarding copyright | ||
* ownership. Elasticsearch B.V. 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. | ||
*/ | ||
|
||
/* | ||
* Modifications Copyright OpenSearch Contributors. See | ||
* GitHub history for details. | ||
*/ | ||
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package org.opensearch.client.json; | ||
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import jakarta.json.stream.JsonParser; | ||
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import java.util.Map; | ||
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public interface LookAheadJsonParser extends JsonParser { | ||
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/** | ||
* Look ahead the value of a text property in the JSON stream. The parser must be on the {@code START_OBJECT} event. | ||
* | ||
* @param name the field name to look up. | ||
* @param defaultValue default value if the field is not found. | ||
* @return a pair containing the field value (or {@code null} if not found), and a parser to be used to read the JSON object. | ||
*/ | ||
Map.Entry<String, JsonParser> lookAheadFieldValue(String name, String defaultValue); | ||
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/** | ||
* In union types, find the variant to be used by looking up property names in the JSON stream until we find one that | ||
* uniquely identifies the variant. | ||
* | ||
* @param <Variant> the type of variant descriptors used by the caller. | ||
* @param variants a map of variant descriptors, keyed by the property name that uniquely identifies the variant. | ||
* @return a pair containing the variant descriptor (or {@code null} if not found), and a parser to be used to read the JSON object. | ||
*/ | ||
<Variant> Map.Entry<Variant, JsonParser> findVariant(Map<String, Variant> variants); | ||
} |
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